128928718

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1\times {\mathrm{8461}}^1$

素因数の和:8883

約数の個数: 16

約数和(自身を含む): 204103440

約数和(自身を除く): 75174722

約数列:

[1, 2, 19, 38, 401, 802, 7619, 8461, 15238, 16922, 160759, 321518, 3392861, 6785722, 64464359, 128928718]

約数ペア:

[(1, 128928718), (2, 64464359), (19, 6785722), (38, 3392861), (401, 321518), (802, 160759), (7619, 16922), (8461, 15238)]