13680121

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:313

約数の個数: 32

約数和(自身を含む): 18385920

約数和(自身を除く): 4705799

約数列:

[1, 7, 13, 17, 37, 91, 119, 221, 239, 259, 481, 629, 1547, 1673, 3107, 3367, 4063, 4403, 8177, 8843, 21749, 28441, 52819, 57239, 61901, 114959, 150331, 369733, 804713, 1052317, 1954303, 13680121]

約数ペア:

[(1, 13680121), (7, 1954303), (13, 1052317), (17, 804713), (37, 369733), (91, 150331), (119, 114959), (221, 61901), (239, 57239), (259, 52819), (481, 28441), (629, 21749), (1547, 8843), (1673, 8177), (3107, 4403), (3367, 4063)]