31090941

素因数分解:

$3^2\times 7^2\times {\mathrm{70501}}^1$

素因数の和:70521

約数の個数: 18

約数和(自身を含む): 52241982

約数和(自身を除く): 21151041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 70501, 211503, 493507, 634509, 1480521, 3454549, 4441563, 10363647, 31090941]

約数ペア:

[(1, 31090941), (3, 10363647), (7, 4441563), (9, 3454549), (21, 1480521), (49, 634509), (63, 493507), (147, 211503), (441, 70501)]