20494660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23831}}^1$

素因数の和:23883

約数の個数: 24

約数和(自身を含む): 44041536

約数和(自身を除く): 23546876

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23831, 47662, 95324, 119155, 238310, 476620, 1024733, 2049466, 4098932, 5123665, 10247330, 20494660]

約数ペア:

[(1, 20494660), (2, 10247330), (4, 5123665), (5, 4098932), (10, 2049466), (20, 1024733), (43, 476620), (86, 238310), (172, 119155), (215, 95324), (430, 47662), (860, 23831)]