20490967

素因数分解:

$7^2\times {\mathrm{17}}^2\times {\mathrm{1447}}^1$

素因数の和:1495

約数の個数: 18

約数和(自身を含む): 25338552

約数和(自身を除く): 4847585

約数列:

[1, 7, 17, 49, 119, 289, 833, 1447, 2023, 10129, 14161, 24599, 70903, 172193, 418183, 1205351, 2927281, 20490967]

約数ペア:

[(1, 20490967), (7, 2927281), (17, 1205351), (49, 418183), (119, 172193), (289, 70903), (833, 24599), (1447, 14161), (2023, 10129)]