20620280

素因数分解:

$2^3\times 5^1\times {\mathrm{515507}}^1$

素因数の和:515518

約数の個数: 16

約数和(自身を含む): 46395720

約数和(自身を除く): 25775440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 515507, 1031014, 2062028, 2577535, 4124056, 5155070, 10310140, 20620280]

約数ペア:

[(1, 20620280), (2, 10310140), (4, 5155070), (5, 4124056), (8, 2577535), (10, 2062028), (20, 1031014), (40, 515507)]