64434820

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{3251}}^1$

素因数の和:4251

約数の個数: 24

約数和(自身を含む): 135491328

約数和(自身を除く): 71056508

約数列:

[1, 2, 4, 5, 10, 20, 991, 1982, 3251, 3964, 4955, 6502, 9910, 13004, 16255, 19820, 32510, 65020, 3221741, 6443482, 12886964, 16108705, 32217410, 64434820]

約数ペア:

[(1, 64434820), (2, 32217410), (4, 16108705), (5, 12886964), (10, 6443482), (20, 3221741), (991, 65020), (1982, 32510), (3251, 19820), (3964, 16255), (4955, 13004), (6502, 9910)]