78656020

素因数分解:

$2^2\times 5^1\times {\mathrm{3932801}}^1$

素因数の和:3932810

約数の個数: 12

約数和(自身を含む): 165177684

約数和(自身を除く): 86521664

約数列:

[1, 2, 4, 5, 10, 20, 3932801, 7865602, 15731204, 19664005, 39328010, 78656020]

約数ペア:

[(1, 78656020), (2, 39328010), (4, 19664005), (5, 15731204), (10, 7865602), (20, 3932801)]