20851508

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{881}}^1$

素因数の和:1043

約数の個数: 24

約数和(自身を含む): 37513224

約数和(自身を除く): 16661716

約数列:

[1, 2, 4, 61, 97, 122, 194, 244, 388, 881, 1762, 3524, 5917, 11834, 23668, 53741, 85457, 107482, 170914, 214964, 341828, 5212877, 10425754, 20851508]

約数ペア:

[(1, 20851508), (2, 10425754), (4, 5212877), (61, 341828), (97, 214964), (122, 170914), (194, 107482), (244, 85457), (388, 53741), (881, 23668), (1762, 11834), (3524, 5917)]