20619805

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{881}}^1$

素因数の和:1068

約数の個数: 16

約数和(自身を含む): 25740288

約数和(自身を除く): 5120483

約数列:

[1, 5, 31, 151, 155, 755, 881, 4405, 4681, 23405, 27311, 133031, 136555, 665155, 4123961, 20619805]

約数ペア:

[(1, 20619805), (5, 4123961), (31, 665155), (151, 136555), (155, 133031), (755, 27311), (881, 23405), (4405, 4681)]