16581020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{13591}}^1$

素因数の和:13661

約数の個数: 24

約数和(自身を含む): 35393568

約数和(自身を除く): 18812548

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 13591, 27182, 54364, 67955, 135910, 271820, 829051, 1658102, 3316204, 4145255, 8290510, 16581020]

約数ペア:

[(1, 16581020), (2, 8290510), (4, 4145255), (5, 3316204), (10, 1658102), (20, 829051), (61, 271820), (122, 135910), (244, 67955), (305, 54364), (610, 27182), (1220, 13591)]