20862405

素因数分解:

$3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3539}}^1$

素因数の和:3681

約数の個数: 24

約数和(自身を含む): 36447840

約数和(自身を除く): 15585435

約数列:

[1, 3, 5, 9, 15, 45, 131, 393, 655, 1179, 1965, 3539, 5895, 10617, 17695, 31851, 53085, 159255, 463609, 1390827, 2318045, 4172481, 6954135, 20862405]

約数ペア:

[(1, 20862405), (3, 6954135), (5, 4172481), (9, 2318045), (15, 1390827), (45, 463609), (131, 159255), (393, 53085), (655, 31851), (1179, 17695), (1965, 10617), (3539, 5895)]