20415856

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{41161}}^1$

素因数の和:41200

約数の個数: 20

約数和(自身を含む): 40832704

約数和(自身を除く): 20416848

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 41161, 82322, 164644, 329288, 658576, 1275991, 2551982, 5103964, 10207928, 20415856]

約数ペア:

[(1, 20415856), (2, 10207928), (4, 5103964), (8, 2551982), (16, 1275991), (31, 658576), (62, 329288), (124, 164644), (248, 82322), (496, 41161)]