20531615

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{4327}}^1$

素因数の和:4418

約数の個数: 16

約数和(自身を含む): 26902848

約数和(自身を除く): 6371233

約数列:

[1, 5, 13, 65, 73, 365, 949, 4327, 4745, 21635, 56251, 281255, 315871, 1579355, 4106323, 20531615]

約数ペア:

[(1, 20531615), (5, 4106323), (13, 1579355), (65, 315871), (73, 281255), (365, 56251), (949, 21635), (4327, 4745)]