77912420

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{3931}}^1$

素因数の和:4931

約数の個数: 24

約数和(自身を含む): 163822848

約数和(自身を除く): 85910428

約数列:

[1, 2, 4, 5, 10, 20, 991, 1982, 3931, 3964, 4955, 7862, 9910, 15724, 19655, 19820, 39310, 78620, 3895621, 7791242, 15582484, 19478105, 38956210, 77912420]

約数ペア:

[(1, 77912420), (2, 38956210), (4, 19478105), (5, 15582484), (10, 7791242), (20, 3895621), (991, 78620), (1982, 39310), (3931, 19820), (3964, 19655), (4955, 15724), (7862, 9910)]