81291260

素因数分解:

$2^2\times 5^1\times {\mathrm{601}}^1\times {\mathrm{6763}}^1$

素因数の和:7373

約数の個数: 24

約数和(自身を含む): 171020976

約数和(自身を除く): 89729716

約数列:

[1, 2, 4, 5, 10, 20, 601, 1202, 2404, 3005, 6010, 6763, 12020, 13526, 27052, 33815, 67630, 135260, 4064563, 8129126, 16258252, 20322815, 40645630, 81291260]

約数ペア:

[(1, 81291260), (2, 40645630), (4, 20322815), (5, 16258252), (10, 8129126), (20, 4064563), (601, 135260), (1202, 67630), (2404, 33815), (3005, 27052), (6010, 13526), (6763, 12020)]