87657620

素因数分解:

$2^2\times 5^1\times {\mathrm{4382881}}^1$

素因数の和:4382890

約数の個数: 12

約数和(自身を含む): 184081044

約数和(自身を除く): 96423424

約数列:

[1, 2, 4, 5, 10, 20, 4382881, 8765762, 17531524, 21914405, 43828810, 87657620]

約数ペア:

[(1, 87657620), (2, 43828810), (4, 21914405), (5, 17531524), (10, 8765762), (20, 4382881)]