81871321

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{8581}}^1$

素因数の和:8664

約数の個数: 16

約数和(自身を含む): 98864640

約数和(自身を除く): 16993319

約数列:

[1, 7, 29, 47, 203, 329, 1363, 8581, 9541, 60067, 248849, 403307, 1741943, 2823149, 11695903, 81871321]

約数ペア:

[(1, 81871321), (7, 11695903), (29, 2823149), (47, 1741943), (203, 403307), (329, 248849), (1363, 60067), (8581, 9541)]