20523970

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{211}}^1$

素因数の和:426

約数の個数: 32

約数和(自身を含む): 37915776

約数和(自身を除く): 17391806

約数列:

[1, 2, 5, 10, 71, 137, 142, 211, 274, 355, 422, 685, 710, 1055, 1370, 2110, 9727, 14981, 19454, 28907, 29962, 48635, 57814, 74905, 97270, 144535, 149810, 289070, 2052397, 4104794, 10261985, 20523970]

約数ペア:

[(1, 20523970), (2, 10261985), (5, 4104794), (10, 2052397), (71, 289070), (137, 149810), (142, 144535), (211, 97270), (274, 74905), (355, 57814), (422, 48635), (685, 29962), (710, 28907), (1055, 19454), (1370, 14981), (2110, 9727)]