20656867980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{61}}^1\times {\mathrm{839}}^1$

素因数の和:981

約数の個数: 288

約数和(自身を含む): 69505551360

約数和(自身を除く): 48848683380

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 60, 61, 62, 70, 84, 93, 105, 122, 124, 140, 155, 183, 186, 210, 217, 244, 305, 310, 366, 372, 420, 427, 434, 465, 610, 620, 651, 732, 839, 854, 868, 915, 930, 961, 1085, 1220, 1281, 1302, 1678, 1708, 1830, 1860, 1891, 1922, 2135, 2170, 2517, 2562, 2604, 2883, 3255, 3356, 3660, 3782, 3844, 4195, 4270, 4340, 4805, 5034, 5124, 5673, 5766, 5873, 6405, 6510, 6727, 7564, 8390, 8540, 9455, 9610, 10068, 11346, 11532, 11746, 12585, 12810, 13020, 13237, 13454, 14415, 16780, 17619, 18910, 19220, 20181, 22692, 23492, 25170, 25620, 26009, 26474, 26908, 28365, 28830, 29365, 33635, 35238, 37820, 39711, 40362, 50340, 51179, 52018, 52948, 56730, 57660, 58621, 58730, 66185, 67270, 70476, 78027, 79422, 80724, 88095, 100905, 102358, 104036, 113460, 117242, 117460, 130045, 132370, 134540, 153537, 156054, 158844, 175863, 176190, 182063, 198555, 201810, 204716, 234484, 255895, 260090, 264740, 293105, 307074, 312108, 351726, 352380, 358253, 364126, 390135, 397110, 403620, 410347, 511790, 520180, 546189, 586210, 614148, 703452, 716506, 728252, 767685, 780270, 794220, 806279, 820694, 879315, 910315, 1023580, 1074759, 1092378, 1172420, 1231041, 1433012, 1535370, 1560540, 1586549, 1612558, 1641388, 1758630, 1791265, 1820630, 2051735, 2149518, 2184756, 2418837, 2462082, 2730945, 3070740, 3173098, 3225116, 3517260, 3582530, 3641260, 4031395, 4103470, 4299036, 4759647, 4837674, 4924164, 5373795, 5461890, 5643953, 6155205, 6346196, 7165060, 7932745, 8062790, 8206940, 9519294, 9675348, 10747590, 10923780, 11105843, 11287906, 12094185, 12310410, 15865490, 16125580, 16931859, 19038588, 21495180, 22211686, 22575812, 23798235, 24188370, 24620820, 28219765, 31730980, 33317529, 33863718, 44423372, 47596470, 48376740, 49183019, 55529215, 56439530, 66635058, 67727436, 84659295, 95192940, 98366038, 111058430, 112879060, 133270116, 147549057, 166587645, 169318590, 196732076, 222116860, 245915095, 295098114, 333175290, 338637180, 344281133, 491830190, 590196228, 666350580, 688562266, 737745285, 983660380, 1032843399, 1377124532, 1475490570, 1721405665, 2065686798, 2950981140, 3442811330, 4131373596, 5164216995, 6885622660, 10328433990, 20656867980]

約数ペア:

[(1, 20656867980), (2, 10328433990), (3, 6885622660), (4, 5164216995), (5, 4131373596), (6, 3442811330), (7, 2950981140), (10, 2065686798), (12, 1721405665), (14, 1475490570), (15, 1377124532), (20, 1032843399), (21, 983660380), (28, 737745285), (30, 688562266), (31, 666350580), (35, 590196228), (42, 491830190), (60, 344281133), (61, 338637180), (62, 333175290), (70, 295098114), (84, 245915095), (93, 222116860), (105, 196732076), (122, 169318590), (124, 166587645), (140, 147549057), (155, 133270116), (183, 112879060), (186, 111058430), (210, 98366038), (217, 95192940), (244, 84659295), (305, 67727436), (310, 66635058), (366, 56439530), (372, 55529215), (420, 49183019), (427, 48376740), (434, 47596470), (465, 44423372), (610, 33863718), (620, 33317529), (651, 31730980), (732, 28219765), (839, 24620820), (854, 24188370), (868, 23798235), (915, 22575812), (930, 22211686), (961, 21495180), (1085, 19038588), (1220, 16931859), (1281, 16125580), (1302, 15865490), (1678, 12310410), (1708, 12094185), (1830, 11287906), (1860, 11105843), (1891, 10923780), (1922, 10747590), (2135, 9675348), (2170, 9519294), (2517, 8206940), (2562, 8062790), (2604, 7932745), (2883, 7165060), (3255, 6346196), (3356, 6155205), (3660, 5643953), (3782, 5461890), (3844, 5373795), (4195, 4924164), (4270, 4837674), (4340, 4759647), (4805, 4299036), (5034, 4103470), (5124, 4031395), (5673, 3641260), (5766, 3582530), (5873, 3517260), (6405, 3225116), (6510, 3173098), (6727, 3070740), (7564, 2730945), (8390, 2462082), (8540, 2418837), (9455, 2184756), (9610, 2149518), (10068, 2051735), (11346, 1820630), (11532, 1791265), (11746, 1758630), (12585, 1641388), (12810, 1612558), (13020, 1586549), (13237, 1560540), (13454, 1535370), (14415, 1433012), (16780, 1231041), (17619, 1172420), (18910, 1092378), (19220, 1074759), (20181, 1023580), (22692, 910315), (23492, 879315), (25170, 820694), (25620, 806279), (26009, 794220), (26474, 780270), (26908, 767685), (28365, 728252), (28830, 716506), (29365, 703452), (33635, 614148), (35238, 586210), (37820, 546189), (39711, 520180), (40362, 511790), (50340, 410347), (51179, 403620), (52018, 397110), (52948, 390135), (56730, 364126), (57660, 358253), (58621, 352380), (58730, 351726), (66185, 312108), (67270, 307074), (70476, 293105), (78027, 264740), (79422, 260090), (80724, 255895), (88095, 234484), (100905, 204716), (102358, 201810), (104036, 198555), (113460, 182063), (117242, 176190), (117460, 175863), (130045, 158844), (132370, 156054), (134540, 153537)]