128434160

素因数分解:

$2^4\times 5^1\times {\mathrm{1605427}}^1$

素因数の和:1605440

約数の個数: 20

約数和(自身を含む): 298609608

約数和(自身を除く): 170175448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1605427, 3210854, 6421708, 8027135, 12843416, 16054270, 25686832, 32108540, 64217080, 128434160]

約数ペア:

[(1, 128434160), (2, 64217080), (4, 32108540), (5, 25686832), (8, 16054270), (10, 12843416), (16, 8027135), (20, 6421708), (40, 3210854), (80, 1605427)]