12664780

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1109}}^1$

素因数の和:1689

約数の個数: 24

約数和(自身を含む): 26666640

約数和(自身を除く): 14001860

約数列:

[1, 2, 4, 5, 10, 20, 571, 1109, 1142, 2218, 2284, 2855, 4436, 5545, 5710, 11090, 11420, 22180, 633239, 1266478, 2532956, 3166195, 6332390, 12664780]

約数ペア:

[(1, 12664780), (2, 6332390), (4, 3166195), (5, 2532956), (10, 1266478), (20, 633239), (571, 22180), (1109, 11420), (1142, 11090), (2218, 5710), (2284, 5545), (2855, 4436)]