20319632

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{577}}^1$

素因数の和:687

約数の個数: 40

約数和(自身を含む): 41283072

約数和(自身を除く): 20963440

約数列:

[1, 2, 4, 8, 16, 31, 62, 71, 124, 142, 248, 284, 496, 568, 577, 1136, 1154, 2201, 2308, 4402, 4616, 8804, 9232, 17608, 17887, 35216, 35774, 40967, 71548, 81934, 143096, 163868, 286192, 327736, 655472, 1269977, 2539954, 5079908, 10159816, 20319632]

約数ペア:

[(1, 20319632), (2, 10159816), (4, 5079908), (8, 2539954), (16, 1269977), (31, 655472), (62, 327736), (71, 286192), (124, 163868), (142, 143096), (248, 81934), (284, 71548), (496, 40967), (568, 35774), (577, 35216), (1136, 17887), (1154, 17608), (2201, 9232), (2308, 8804), (4402, 4616)]