21386757

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{44279}}^1$

素因数の和:44312

約数の個数: 16

約数和(自身を含む): 34007040

約数和(自身を除く): 12620283

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 44279, 132837, 309953, 929859, 1018417, 3055251, 7128919, 21386757]

約数ペア:

[(1, 21386757), (3, 7128919), (7, 3055251), (21, 1018417), (23, 929859), (69, 309953), (161, 132837), (483, 44279)]