61908820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71987}}^1$

素因数の和:72039

約数の個数: 24

約数和(自身を含む): 133033824

約数和(自身を除く): 71125004

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 71987, 143974, 287948, 359935, 719870, 1439740, 3095441, 6190882, 12381764, 15477205, 30954410, 61908820]

約数ペア:

[(1, 61908820), (2, 30954410), (4, 15477205), (5, 12381764), (10, 6190882), (20, 3095441), (43, 1439740), (86, 719870), (172, 359935), (215, 287948), (430, 143974), (860, 71987)]