81278528

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{577}}^1$

素因数の和:691

約数の個数: 56

約数和(自身を含む): 169127424

約数和(自身を除く): 87848896

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 71, 124, 142, 248, 284, 496, 568, 577, 992, 1136, 1154, 1984, 2201, 2272, 2308, 4402, 4544, 4616, 8804, 9232, 17608, 17887, 18464, 35216, 35774, 36928, 40967, 70432, 71548, 81934, 140864, 143096, 163868, 286192, 327736, 572384, 655472, 1144768, 1269977, 1310944, 2539954, 2621888, 5079908, 10159816, 20319632, 40639264, 81278528]

約数ペア:

[(1, 81278528), (2, 40639264), (4, 20319632), (8, 10159816), (16, 5079908), (31, 2621888), (32, 2539954), (62, 1310944), (64, 1269977), (71, 1144768), (124, 655472), (142, 572384), (248, 327736), (284, 286192), (496, 163868), (568, 143096), (577, 140864), (992, 81934), (1136, 71548), (1154, 70432), (1984, 40967), (2201, 36928), (2272, 35774), (2308, 35216), (4402, 18464), (4544, 17887), (4616, 17608), (8804, 9232)]