20351560

素因数分解:

$2^3\times 5^1\times {\mathrm{508789}}^1$

素因数の和:508800

約数の個数: 16

約数和(自身を含む): 45791100

約数和(自身を除く): 25439540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 508789, 1017578, 2035156, 2543945, 4070312, 5087890, 10175780, 20351560]

約数ペア:

[(1, 20351560), (2, 10175780), (4, 5087890), (5, 4070312), (8, 2543945), (10, 2035156), (20, 1017578), (40, 508789)]