39639560

素因数分解:

$2^3\times 5^1\times {\mathrm{990989}}^1$

素因数の和:991000

約数の個数: 16

約数和(自身を含む): 89189100

約数和(自身を除く): 49549540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 990989, 1981978, 3963956, 4954945, 7927912, 9909890, 19819780, 39639560]

約数ペア:

[(1, 39639560), (2, 19819780), (4, 9909890), (5, 7927912), (8, 4954945), (10, 3963956), (20, 1981978), (40, 990989)]