19924821

素因数分解:

$3^2\times 7^2\times {\mathrm{45181}}^1$

素因数の和:45201

約数の個数: 18

約数和(自身を含む): 33479862

約数和(自身を除く): 13555041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45181, 135543, 316267, 406629, 948801, 2213869, 2846403, 6641607, 19924821]

約数ペア:

[(1, 19924821), (3, 6641607), (7, 2846403), (9, 2213869), (21, 948801), (49, 406629), (63, 316267), (147, 135543), (441, 45181)]