12742405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 17385984

約数和(自身を除く): 4643579

約数列:

[1, 5, 13, 43, 47, 65, 97, 215, 235, 485, 559, 611, 1261, 2021, 2795, 3055, 4171, 4559, 6305, 10105, 20855, 22795, 26273, 54223, 59267, 131365, 196037, 271115, 296335, 980185, 2548481, 12742405]

約数ペア:

[(1, 12742405), (5, 2548481), (13, 980185), (43, 296335), (47, 271115), (65, 196037), (97, 131365), (215, 59267), (235, 54223), (485, 26273), (559, 22795), (611, 20855), (1261, 10105), (2021, 6305), (2795, 4559), (3055, 4171)]