18868521

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{3109}}^1$

素因数の和:3153

約数の個数: 24

約数和(自身を含む): 30552640

約数和(自身を除く): 11684119

約数列:

[1, 3, 7, 17, 21, 51, 119, 289, 357, 867, 2023, 3109, 6069, 9327, 21763, 52853, 65289, 158559, 369971, 898501, 1109913, 2695503, 6289507, 18868521]

約数ペア:

[(1, 18868521), (3, 6289507), (7, 2695503), (17, 1109913), (21, 898501), (51, 369971), (119, 158559), (289, 65289), (357, 52853), (867, 21763), (2023, 9327), (3109, 6069)]