256629988

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{491}}^1\times {\mathrm{3187}}^1$

素因数の和:3723

約数の個数: 24

約数和(自身を含む): 461137824

約数和(自身を除く): 204507836

約数列:

[1, 2, 4, 41, 82, 164, 491, 982, 1964, 3187, 6374, 12748, 20131, 40262, 80524, 130667, 261334, 522668, 1564817, 3129634, 6259268, 64157497, 128314994, 256629988]

約数ペア:

[(1, 256629988), (2, 128314994), (4, 64157497), (41, 6259268), (82, 3129634), (164, 1564817), (491, 522668), (982, 261334), (1964, 130667), (3187, 80524), (6374, 40262), (12748, 20131)]