20543090

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{5281}}^1$

素因数の和:5677

約数の個数: 16

約数和(自身を含む): 37079640

約数和(自身を除く): 16536550

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 5281, 10562, 26405, 52810, 2054309, 4108618, 10271545, 20543090]

約数ペア:

[(1, 20543090), (2, 10271545), (5, 4108618), (10, 2054309), (389, 52810), (778, 26405), (1945, 10562), (3890, 5281)]