20285560

素因数分解:

$2^3\times 5^1\times {\mathrm{507139}}^1$

素因数の和:507150

約数の個数: 16

約数和(自身を含む): 45642600

約数和(自身を除く): 25357040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 507139, 1014278, 2028556, 2535695, 4057112, 5071390, 10142780, 20285560]

約数ペア:

[(1, 20285560), (2, 10142780), (4, 5071390), (5, 4057112), (8, 2535695), (10, 2028556), (20, 1014278), (40, 507139)]