20809901247

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{81457}}^1$

素因数の和:81599

約数の個数: 32

約数和(自身を含む): 29778438144

約数和(自身を除く): 8968536897

約数列:

[1, 3, 31, 41, 67, 93, 123, 201, 1271, 2077, 2747, 3813, 6231, 8241, 81457, 85157, 244371, 255471, 2525167, 3339737, 5457619, 7575501, 10019211, 16372857, 103531847, 169186189, 223762379, 310595541, 507558567, 671287137, 6936633749, 20809901247]

約数ペア:

[(1, 20809901247), (3, 6936633749), (31, 671287137), (41, 507558567), (67, 310595541), (93, 223762379), (123, 169186189), (201, 103531847), (1271, 16372857), (2077, 10019211), (2747, 7575501), (3813, 5457619), (6231, 3339737), (8241, 2525167), (81457, 255471), (85157, 244371)]