20341960

素因数分解:

$2^3\times 5^1\times {\mathrm{508549}}^1$

素因数の和:508560

約数の個数: 16

約数和(自身を含む): 45769500

約数和(自身を除く): 25427540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 508549, 1017098, 2034196, 2542745, 4068392, 5085490, 10170980, 20341960]

約数ペア:

[(1, 20341960), (2, 10170980), (4, 5085490), (5, 4068392), (8, 2542745), (10, 2034196), (20, 1017098), (40, 508549)]