661521

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{109}}^1$

素因数の和:153

約数の個数: 24

約数和(自身を含む): 1080640

約数和(自身を除く): 419119

約数列:

[1, 3, 7, 17, 21, 51, 109, 119, 289, 327, 357, 763, 867, 1853, 2023, 2289, 5559, 6069, 12971, 31501, 38913, 94503, 220507, 661521]

約数ペア:

[(1, 661521), (3, 220507), (7, 94503), (17, 38913), (21, 31501), (51, 12971), (109, 6069), (119, 5559), (289, 2289), (327, 2023), (357, 1853), (763, 867)]