128816175080

素因数分解:

$2^3\times 5^1\times {\mathrm{3220404377}}^1$

素因数の和:3220404388

約数の個数: 16

約数和(自身を含む): 289836394020

約数和(自身を除く): 161020218940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3220404377, 6440808754, 12881617508, 16102021885, 25763235016, 32204043770, 64408087540, 128816175080]

約数ペア:

[(1, 128816175080), (2, 64408087540), (4, 32204043770), (5, 25763235016), (8, 16102021885), (10, 12881617508), (20, 6440808754), (40, 3220404377)]