16988195

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:255

約数の個数: 32

約数和(自身を含む): 24224640

約数和(自身を除く): 7236445

約数列:

[1, 5, 7, 35, 61, 73, 109, 305, 365, 427, 511, 545, 763, 2135, 2555, 3815, 4453, 6649, 7957, 22265, 31171, 33245, 39785, 46543, 55699, 155855, 232715, 278495, 485377, 2426885, 3397639, 16988195]

約数ペア:

[(1, 16988195), (5, 3397639), (7, 2426885), (35, 485377), (61, 278495), (73, 232715), (109, 155855), (305, 55699), (365, 46543), (427, 39785), (511, 33245), (545, 31171), (763, 22265), (2135, 7957), (2555, 6649), (3815, 4453)]