21167156717

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{571}}^1\times {\mathrm{1229}}^1$

素因数の和:1977

約数の個数: 32

約数和(自身を含む): 25215590400

約数和(自身を除く): 4048433683

約数列:

[1, 7, 31, 139, 217, 571, 973, 1229, 3997, 4309, 8603, 17701, 30163, 38099, 79369, 123907, 170831, 266693, 555583, 701759, 1195817, 2460439, 4912313, 5295761, 17223073, 21754529, 37070327, 97544501, 152281703, 682811507, 3023879531, 21167156717]

約数ペア:

[(1, 21167156717), (7, 3023879531), (31, 682811507), (139, 152281703), (217, 97544501), (571, 37070327), (973, 21754529), (1229, 17223073), (3997, 5295761), (4309, 4912313), (8603, 2460439), (17701, 1195817), (30163, 701759), (38099, 555583), (79369, 266693), (123907, 170831)]