18991629

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{3989}}^1$

素因数の和:4041

約数の個数: 18

約数和(自身を含む): 28684110

約数和(自身を除く): 9692481

約数列:

[1, 3, 9, 23, 69, 207, 529, 1587, 3989, 4761, 11967, 35901, 91747, 275241, 825723, 2110181, 6330543, 18991629]

約数ペア:

[(1, 18991629), (3, 6330543), (9, 2110181), (23, 825723), (69, 275241), (207, 91747), (529, 35901), (1587, 11967), (3989, 4761)]