128950160

素因数分解:

$2^4\times 5^1\times {\mathrm{1611877}}^1$

素因数の和:1611890

約数の個数: 20

約数和(自身を含む): 299809308

約数和(自身を除く): 170859148

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1611877, 3223754, 6447508, 8059385, 12895016, 16118770, 25790032, 32237540, 64475080, 128950160]

約数ペア:

[(1, 128950160), (2, 64475080), (4, 32237540), (5, 25790032), (8, 16118770), (10, 12895016), (16, 8059385), (20, 6447508), (40, 3223754), (80, 1611877)]