408974480

素因数分解:

$2^4\times 5^1\times {\mathrm{5112181}}^1$

素因数の和:5112194

約数の個数: 20

約数和(自身を含む): 950865852

約数和(自身を除く): 541891372

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5112181, 10224362, 20448724, 25560905, 40897448, 51121810, 81794896, 102243620, 204487240, 408974480]

約数ペア:

[(1, 408974480), (2, 204487240), (4, 102243620), (5, 81794896), (8, 51121810), (10, 40897448), (16, 25560905), (20, 20448724), (40, 10224362), (80, 5112181)]