21130195

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1\times {\mathrm{283}}^1$

素因数の和:534

約数の個数: 16

約数和(自身を含む): 25866720

約数和(自身を除く): 4736525

約数列:

[1, 5, 109, 137, 283, 545, 685, 1415, 14933, 30847, 38771, 74665, 154235, 193855, 4226039, 21130195]

約数ペア:

[(1, 21130195), (5, 4226039), (109, 193855), (137, 154235), (283, 74665), (545, 38771), (685, 30847), (1415, 14933)]