20480481

素因数分解:

$3^2\times 7^2\times {\mathrm{46441}}^1$

素因数の和:46461

約数の個数: 18

約数和(自身を含む): 34413522

約数和(自身を除く): 13933041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 46441, 139323, 325087, 417969, 975261, 2275609, 2925783, 6826827, 20480481]

約数ペア:

[(1, 20480481), (3, 6826827), (7, 2925783), (9, 2275609), (21, 975261), (49, 417969), (63, 325087), (147, 139323), (441, 46441)]