20637155

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{443}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 31200768

約数和(自身を除く): 10563613

約数列:

[1, 5, 7, 11, 35, 55, 77, 121, 385, 443, 605, 847, 1331, 2215, 3101, 4235, 4873, 6655, 9317, 15505, 24365, 34111, 46585, 53603, 170555, 268015, 375221, 589633, 1876105, 2948165, 4127431, 20637155]

約数ペア:

[(1, 20637155), (5, 4127431), (7, 2948165), (11, 1876105), (35, 589633), (55, 375221), (77, 268015), (121, 170555), (385, 53603), (443, 46585), (605, 34111), (847, 24365), (1331, 15505), (2215, 9317), (3101, 6655), (4235, 4873)]