128307640

素因数分解:

$2^3\times 5^1\times {\mathrm{3207691}}^1$

素因数の和:3207702

約数の個数: 16

約数和(自身を含む): 288692280

約数和(自身を除く): 160384640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3207691, 6415382, 12830764, 16038455, 25661528, 32076910, 64153820, 128307640]

約数ペア:

[(1, 128307640), (2, 64153820), (4, 32076910), (5, 25661528), (8, 16038455), (10, 12830764), (20, 6415382), (40, 3207691)]