281638968

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{787}}^1$

素因数の和:877

約数の個数: 128

約数和(自身を含む): 804894720

約数和(自身を除く): 523255752

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 31, 37, 39, 52, 62, 74, 78, 93, 104, 111, 124, 148, 156, 186, 222, 248, 296, 312, 372, 403, 444, 481, 744, 787, 806, 888, 962, 1147, 1209, 1443, 1574, 1612, 1924, 2294, 2361, 2418, 2886, 3148, 3224, 3441, 3848, 4588, 4722, 4836, 5772, 6296, 6882, 9176, 9444, 9672, 10231, 11544, 13764, 14911, 18888, 20462, 24397, 27528, 29119, 29822, 30693, 40924, 44733, 48794, 58238, 59644, 61386, 73191, 81848, 87357, 89466, 97588, 116476, 119288, 122772, 146382, 174714, 178932, 195176, 232952, 245544, 292764, 317161, 349428, 357864, 378547, 585528, 634322, 698856, 757094, 902689, 951483, 1135641, 1268644, 1514188, 1805378, 1902966, 2271282, 2537288, 2708067, 3028376, 3610756, 3805932, 4542564, 5416134, 7221512, 7611864, 9085128, 10832268, 11734957, 21664536, 23469914, 35204871, 46939828, 70409742, 93879656, 140819484, 281638968]

約数ペア:

[(1, 281638968), (2, 140819484), (3, 93879656), (4, 70409742), (6, 46939828), (8, 35204871), (12, 23469914), (13, 21664536), (24, 11734957), (26, 10832268), (31, 9085128), (37, 7611864), (39, 7221512), (52, 5416134), (62, 4542564), (74, 3805932), (78, 3610756), (93, 3028376), (104, 2708067), (111, 2537288), (124, 2271282), (148, 1902966), (156, 1805378), (186, 1514188), (222, 1268644), (248, 1135641), (296, 951483), (312, 902689), (372, 757094), (403, 698856), (444, 634322), (481, 585528), (744, 378547), (787, 357864), (806, 349428), (888, 317161), (962, 292764), (1147, 245544), (1209, 232952), (1443, 195176), (1574, 178932), (1612, 174714), (1924, 146382), (2294, 122772), (2361, 119288), (2418, 116476), (2886, 97588), (3148, 89466), (3224, 87357), (3441, 81848), (3848, 73191), (4588, 61386), (4722, 59644), (4836, 58238), (5772, 48794), (6296, 44733), (6882, 40924), (9176, 30693), (9444, 29822), (9672, 29119), (10231, 27528), (11544, 24397), (13764, 20462), (14911, 18888)]