643857604

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{301997}}^1$

素因数の和:302055

約数の個数: 24

約数和(自身を含む): 1243023768

約数和(自身を除く): 599166164

約数列:

[1, 2, 4, 13, 26, 41, 52, 82, 164, 533, 1066, 2132, 301997, 603994, 1207988, 3925961, 7851922, 12381877, 15703844, 24763754, 49527508, 160964401, 321928802, 643857604]

約数ペア:

[(1, 643857604), (2, 321928802), (4, 160964401), (13, 49527508), (26, 24763754), (41, 15703844), (52, 12381877), (82, 7851922), (164, 3925961), (533, 1207988), (1066, 603994), (2132, 301997)]