1244780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{571}}^1$

素因数の和:689

約数の個数: 24

約数和(自身を含む): 2642640

約数和(自身を除く): 1397860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 571, 1090, 1142, 2180, 2284, 2855, 5710, 11420, 62239, 124478, 248956, 311195, 622390, 1244780]

約数ペア:

[(1, 1244780), (2, 622390), (4, 311195), (5, 248956), (10, 124478), (20, 62239), (109, 11420), (218, 5710), (436, 2855), (545, 2284), (571, 2180), (1090, 1142)]