80784820

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{27109}}^1$

素因数の和:27267

約数の個数: 24

約数和(自身を含む): 170793000

約数和(自身を除く): 90008180

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 27109, 54218, 108436, 135545, 271090, 542180, 4039241, 8078482, 16156964, 20196205, 40392410, 80784820]

約数ペア:

[(1, 80784820), (2, 40392410), (4, 20196205), (5, 16156964), (10, 8078482), (20, 4039241), (149, 542180), (298, 271090), (596, 135545), (745, 108436), (1490, 54218), (2980, 27109)]