2225780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1021}}^1$

素因数の和:1139

約数の個数: 24

約数和(自身を含む): 4721640

約数和(自身を除く): 2495860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1021, 1090, 2042, 2180, 4084, 5105, 10210, 20420, 111289, 222578, 445156, 556445, 1112890, 2225780]

約数ペア:

[(1, 2225780), (2, 1112890), (4, 556445), (5, 445156), (10, 222578), (20, 111289), (109, 20420), (218, 10210), (436, 5105), (545, 4084), (1021, 2180), (1090, 2042)]