21144440

素因数分解:

$2^3\times 5^1\times {\mathrm{528611}}^1$

素因数の和:528622

約数の個数: 16

約数和(自身を含む): 47575080

約数和(自身を除く): 26430640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 528611, 1057222, 2114444, 2643055, 4228888, 5286110, 10572220, 21144440]

約数ペア:

[(1, 21144440), (2, 10572220), (4, 5286110), (5, 4228888), (8, 2643055), (10, 2114444), (20, 1057222), (40, 528611)]