128291891

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{3271}}^1$

素因数の和:3722

約数の個数: 16

約数和(自身を含む): 158312448

約数和(自身を除く): 30020557

約数列:

[1, 7, 13, 91, 431, 3017, 3271, 5603, 22897, 39221, 42523, 297661, 1409801, 9868607, 18327413, 128291891]

約数ペア:

[(1, 128291891), (7, 18327413), (13, 9868607), (91, 1409801), (431, 297661), (3017, 42523), (3271, 39221), (5603, 22897)]