20975220

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:235

約数の個数: 192

約数和(自身を含む): 77414400

約数和(自身を除く): 56439180

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 31, 35, 36, 42, 45, 54, 60, 62, 63, 70, 84, 90, 93, 105, 108, 124, 126, 135, 140, 155, 179, 180, 186, 189, 210, 217, 252, 270, 279, 310, 315, 358, 372, 378, 420, 434, 465, 537, 540, 558, 620, 630, 651, 716, 756, 837, 868, 895, 930, 945, 1074, 1085, 1116, 1253, 1260, 1302, 1395, 1611, 1674, 1790, 1860, 1890, 1953, 2148, 2170, 2506, 2604, 2685, 2790, 3222, 3255, 3348, 3580, 3759, 3780, 3906, 4185, 4340, 4833, 5012, 5370, 5549, 5580, 5859, 6265, 6444, 6510, 7518, 7812, 8055, 8370, 9666, 9765, 10740, 11098, 11277, 11718, 12530, 13020, 15036, 16110, 16647, 16740, 18795, 19332, 19530, 22196, 22554, 23436, 24165, 25060, 27745, 29295, 32220, 33294, 33831, 37590, 38843, 39060, 45108, 48330, 49941, 55490, 56385, 58590, 66588, 67662, 75180, 77686, 83235, 96660, 99882, 110980, 112770, 116529, 117180, 135324, 149823, 155372, 166470, 169155, 194215, 199764, 225540, 233058, 249705, 299646, 332940, 338310, 349587, 388430, 466116, 499410, 582645, 599292, 676620, 699174, 749115, 776860, 998820, 1048761, 1165290, 1398348, 1498230, 1747935, 2097522, 2330580, 2996460, 3495870, 4195044, 5243805, 6991740, 10487610, 20975220]

約数ペア:

[(1, 20975220), (2, 10487610), (3, 6991740), (4, 5243805), (5, 4195044), (6, 3495870), (7, 2996460), (9, 2330580), (10, 2097522), (12, 1747935), (14, 1498230), (15, 1398348), (18, 1165290), (20, 1048761), (21, 998820), (27, 776860), (28, 749115), (30, 699174), (31, 676620), (35, 599292), (36, 582645), (42, 499410), (45, 466116), (54, 388430), (60, 349587), (62, 338310), (63, 332940), (70, 299646), (84, 249705), (90, 233058), (93, 225540), (105, 199764), (108, 194215), (124, 169155), (126, 166470), (135, 155372), (140, 149823), (155, 135324), (179, 117180), (180, 116529), (186, 112770), (189, 110980), (210, 99882), (217, 96660), (252, 83235), (270, 77686), (279, 75180), (310, 67662), (315, 66588), (358, 58590), (372, 56385), (378, 55490), (420, 49941), (434, 48330), (465, 45108), (537, 39060), (540, 38843), (558, 37590), (620, 33831), (630, 33294), (651, 32220), (716, 29295), (756, 27745), (837, 25060), (868, 24165), (895, 23436), (930, 22554), (945, 22196), (1074, 19530), (1085, 19332), (1116, 18795), (1253, 16740), (1260, 16647), (1302, 16110), (1395, 15036), (1611, 13020), (1674, 12530), (1790, 11718), (1860, 11277), (1890, 11098), (1953, 10740), (2148, 9765), (2170, 9666), (2506, 8370), (2604, 8055), (2685, 7812), (2790, 7518), (3222, 6510), (3255, 6444), (3348, 6265), (3580, 5859), (3759, 5580), (3780, 5549), (3906, 5370), (4185, 5012), (4340, 4833)]