991627

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{641}}^1$

素因数の和:678

約数の個数: 16

約数和(自身を含む): 1294272

約数和(自身を除く): 302645

約数列:

[1, 7, 13, 17, 91, 119, 221, 641, 1547, 4487, 8333, 10897, 58331, 76279, 141661, 991627]

約数ペア:

[(1, 991627), (7, 141661), (13, 76279), (17, 58331), (91, 10897), (119, 8333), (221, 4487), (641, 1547)]