78919240

素因数分解:

$2^3\times 5^1\times {\mathrm{1972981}}^1$

素因数の和:1972992

約数の個数: 16

約数和(自身を含む): 177568380

約数和(自身を除く): 98649140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1972981, 3945962, 7891924, 9864905, 15783848, 19729810, 39459620, 78919240]

約数ペア:

[(1, 78919240), (2, 39459620), (4, 19729810), (5, 15783848), (8, 9864905), (10, 7891924), (20, 3945962), (40, 1972981)]