20457790

素因数分解:

$2^1\times 5^1\times {\mathrm{271}}^1\times {\mathrm{7549}}^1$

素因数の和:7827

約数の個数: 16

約数和(自身を含む): 36964800

約数和(自身を除く): 16507010

約数列:

[1, 2, 5, 10, 271, 542, 1355, 2710, 7549, 15098, 37745, 75490, 2045779, 4091558, 10228895, 20457790]

約数ペア:

[(1, 20457790), (2, 10228895), (5, 4091558), (10, 2045779), (271, 75490), (542, 37745), (1355, 15098), (2710, 7549)]