31001780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{14221}}^1$

素因数の和:14339

約数の個数: 24

約数和(自身を含む): 65705640

約数和(自身を除く): 34703860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 14221, 28442, 56884, 71105, 142210, 284420, 1550089, 3100178, 6200356, 7750445, 15500890, 31001780]

約数ペア:

[(1, 31001780), (2, 15500890), (4, 7750445), (5, 6200356), (10, 3100178), (20, 1550089), (109, 284420), (218, 142210), (436, 71105), (545, 56884), (1090, 28442), (2180, 14221)]