20817320

素因数分解:

$2^3\times 5^1\times {\mathrm{520433}}^1$

素因数の和:520444

約数の個数: 16

約数和(自身を含む): 46839060

約数和(自身を除く): 26021740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520433, 1040866, 2081732, 2602165, 4163464, 5204330, 10408660, 20817320]

約数ペア:

[(1, 20817320), (2, 10408660), (4, 5204330), (5, 4163464), (8, 2602165), (10, 2081732), (20, 1040866), (40, 520433)]