17980345

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{631}}^1$

素因数の和:816

約数の個数: 16

約数和(自身を含む): 22296960

約数和(自身を除く): 4316615

約数列:

[1, 5, 41, 139, 205, 631, 695, 3155, 5699, 25871, 28495, 87709, 129355, 438545, 3596069, 17980345]

約数ペア:

[(1, 17980345), (5, 3596069), (41, 438545), (139, 129355), (205, 87709), (631, 28495), (695, 25871), (3155, 5699)]