81048870

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 256

約数和(自身を含む): 271411200

約数和(自身を除く): 190362330

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 27, 30, 35, 37, 38, 42, 45, 54, 57, 61, 63, 70, 74, 90, 95, 105, 111, 114, 122, 126, 133, 135, 171, 183, 185, 189, 190, 210, 222, 259, 266, 270, 285, 305, 315, 333, 342, 366, 370, 378, 399, 427, 513, 518, 549, 555, 570, 610, 630, 665, 666, 703, 777, 798, 854, 855, 915, 945, 999, 1026, 1098, 1110, 1159, 1197, 1281, 1295, 1330, 1406, 1554, 1647, 1665, 1710, 1830, 1890, 1995, 1998, 2109, 2135, 2257, 2318, 2331, 2394, 2562, 2565, 2590, 2745, 3294, 3330, 3477, 3515, 3591, 3843, 3885, 3990, 4218, 4270, 4514, 4662, 4921, 4995, 5130, 5490, 5795, 5985, 6327, 6405, 6771, 6954, 6993, 7030, 7182, 7686, 7770, 8113, 8235, 9842, 9990, 10431, 10545, 11285, 11529, 11590, 11655, 11970, 12654, 12810, 13542, 13986, 14763, 15799, 16226, 16470, 17385, 17955, 18981, 19215, 20313, 20862, 21090, 22570, 23058, 23310, 24339, 24605, 29526, 31293, 31598, 31635, 33855, 34770, 34965, 35910, 37962, 38430, 40565, 40626, 42883, 44289, 47397, 48678, 49210, 52155, 57645, 60939, 62586, 63270, 67710, 69930, 73017, 73815, 78995, 81130, 85766, 88578, 94794, 94905, 101565, 104310, 115290, 121695, 121878, 128649, 132867, 142191, 146034, 147630, 156465, 157990, 189810, 203130, 214415, 219051, 221445, 236985, 243390, 257298, 265734, 284382, 300181, 304695, 312930, 365085, 385947, 426573, 428830, 438102, 442890, 473970, 600362, 609390, 643245, 664335, 710955, 730170, 771894, 853146, 900543, 1095255, 1157841, 1286490, 1328670, 1421910, 1500905, 1801086, 1929735, 2132865, 2190510, 2315682, 2701629, 3001810, 3859470, 4265730, 4502715, 5403258, 5789205, 8104887, 9005430, 11578410, 13508145, 16209774, 27016290, 40524435, 81048870]

約数ペア:

[(1, 81048870), (2, 40524435), (3, 27016290), (5, 16209774), (6, 13508145), (7, 11578410), (9, 9005430), (10, 8104887), (14, 5789205), (15, 5403258), (18, 4502715), (19, 4265730), (21, 3859470), (27, 3001810), (30, 2701629), (35, 2315682), (37, 2190510), (38, 2132865), (42, 1929735), (45, 1801086), (54, 1500905), (57, 1421910), (61, 1328670), (63, 1286490), (70, 1157841), (74, 1095255), (90, 900543), (95, 853146), (105, 771894), (111, 730170), (114, 710955), (122, 664335), (126, 643245), (133, 609390), (135, 600362), (171, 473970), (183, 442890), (185, 438102), (189, 428830), (190, 426573), (210, 385947), (222, 365085), (259, 312930), (266, 304695), (270, 300181), (285, 284382), (305, 265734), (315, 257298), (333, 243390), (342, 236985), (366, 221445), (370, 219051), (378, 214415), (399, 203130), (427, 189810), (513, 157990), (518, 156465), (549, 147630), (555, 146034), (570, 142191), (610, 132867), (630, 128649), (665, 121878), (666, 121695), (703, 115290), (777, 104310), (798, 101565), (854, 94905), (855, 94794), (915, 88578), (945, 85766), (999, 81130), (1026, 78995), (1098, 73815), (1110, 73017), (1159, 69930), (1197, 67710), (1281, 63270), (1295, 62586), (1330, 60939), (1406, 57645), (1554, 52155), (1647, 49210), (1665, 48678), (1710, 47397), (1830, 44289), (1890, 42883), (1995, 40626), (1998, 40565), (2109, 38430), (2135, 37962), (2257, 35910), (2318, 34965), (2331, 34770), (2394, 33855), (2562, 31635), (2565, 31598), (2590, 31293), (2745, 29526), (3294, 24605), (3330, 24339), (3477, 23310), (3515, 23058), (3591, 22570), (3843, 21090), (3885, 20862), (3990, 20313), (4218, 19215), (4270, 18981), (4514, 17955), (4662, 17385), (4921, 16470), (4995, 16226), (5130, 15799), (5490, 14763), (5795, 13986), (5985, 13542), (6327, 12810), (6405, 12654), (6771, 11970), (6954, 11655), (6993, 11590), (7030, 11529), (7182, 11285), (7686, 10545), (7770, 10431), (8113, 9990), (8235, 9842)]