129702640

素因数分解:

$2^4\times 5^1\times {\mathrm{1621283}}^1$

素因数の和:1621296

約数の個数: 20

約数和(自身を含む): 301558824

約数和(自身を除く): 171856184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1621283, 3242566, 6485132, 8106415, 12970264, 16212830, 25940528, 32425660, 64851320, 129702640]

約数ペア:

[(1, 129702640), (2, 64851320), (4, 32425660), (5, 25940528), (8, 16212830), (10, 12970264), (16, 8106415), (20, 6485132), (40, 3242566), (80, 1621283)]