20513200

素因数分解:

$2^4\times 5^2\times {\mathrm{51283}}^1$

素因数の和:51301

約数の個数: 30

約数和(自身を含む): 49283924

約数和(自身を除く): 28770724

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51283, 102566, 205132, 256415, 410264, 512830, 820528, 1025660, 1282075, 2051320, 2564150, 4102640, 5128300, 10256600, 20513200]

約数ペア:

[(1, 20513200), (2, 10256600), (4, 5128300), (5, 4102640), (8, 2564150), (10, 2051320), (16, 1282075), (20, 1025660), (25, 820528), (40, 512830), (50, 410264), (80, 256415), (100, 205132), (200, 102566), (400, 51283)]