201718855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7937}}^1$

素因数の和:7995

約数の個数: 32

約数和(自身を含む): 288054144

約数和(自身を除く): 86335289

約数列:

[1, 5, 13, 17, 23, 65, 85, 115, 221, 299, 391, 1105, 1495, 1955, 5083, 7937, 25415, 39685, 103181, 134929, 182551, 515905, 674645, 912755, 1754077, 2373163, 3103367, 8770385, 11865815, 15516835, 40343771, 201718855]

約数ペア:

[(1, 201718855), (5, 40343771), (13, 15516835), (17, 11865815), (23, 8770385), (65, 3103367), (85, 2373163), (115, 1754077), (221, 912755), (299, 674645), (391, 515905), (1105, 182551), (1495, 134929), (1955, 103181), (5083, 39685), (7937, 25415)]