66744680

素因数分解:

$2^3\times 5^1\times {\mathrm{1668617}}^1$

素因数の和:1668628

約数の個数: 16

約数和(自身を含む): 150175620

約数和(自身を除く): 83430940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1668617, 3337234, 6674468, 8343085, 13348936, 16686170, 33372340, 66744680]

約数ペア:

[(1, 66744680), (2, 33372340), (4, 16686170), (5, 13348936), (8, 8343085), (10, 6674468), (20, 3337234), (40, 1668617)]