7021780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3221}}^1$

素因数の和:3339

約数の個数: 24

約数和(自身を含む): 14885640

約数和(自身を除く): 7863860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 3221, 6442, 12884, 16105, 32210, 64420, 351089, 702178, 1404356, 1755445, 3510890, 7021780]

約数ペア:

[(1, 7021780), (2, 3510890), (4, 1755445), (5, 1404356), (10, 702178), (20, 351089), (109, 64420), (218, 32210), (436, 16105), (545, 12884), (1090, 6442), (2180, 3221)]