31212545

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{379}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 46475520

約数和(自身を除く): 15262975

約数列:

[1, 5, 7, 13, 35, 65, 91, 181, 379, 455, 905, 1267, 1895, 2353, 2653, 4927, 6335, 11765, 13265, 16471, 24635, 34489, 68599, 82355, 172445, 342995, 480193, 891787, 2400965, 4458935, 6242509, 31212545]

約数ペア:

[(1, 31212545), (5, 6242509), (7, 4458935), (13, 2400965), (35, 891787), (65, 480193), (91, 342995), (181, 172445), (379, 82355), (455, 68599), (905, 34489), (1267, 24635), (1895, 16471), (2353, 13265), (2653, 11765), (4927, 6335)]