81611216

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{40163}}^1$

素因数の和:40298

約数の個数: 20

約数和(自身を含む): 159370752

約数和(自身を除く): 77759536

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 40163, 80326, 160652, 321304, 642608, 5100701, 10201402, 20402804, 40805608, 81611216]

約数ペア:

[(1, 81611216), (2, 40805608), (4, 20402804), (8, 10201402), (16, 5100701), (127, 642608), (254, 321304), (508, 160652), (1016, 80326), (2032, 40163)]