27981395

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 38572800

約数和(自身を除く): 10591405

約数列:

[1, 5, 13, 19, 65, 95, 139, 163, 247, 695, 815, 1235, 1807, 2119, 2641, 3097, 9035, 10595, 13205, 15485, 22657, 34333, 40261, 113285, 171665, 201305, 294541, 430483, 1472705, 2152415, 5596279, 27981395]

約数ペア:

[(1, 27981395), (5, 5596279), (13, 2152415), (19, 1472705), (65, 430483), (95, 294541), (139, 201305), (163, 171665), (247, 113285), (695, 40261), (815, 34333), (1235, 22657), (1807, 15485), (2119, 13205), (2641, 10595), (3097, 9035)]