20718260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{24091}}^1$

素因数の和:24143

約数の個数: 24

約数和(自身を含む): 44522016

約数和(自身を除く): 23803756

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 24091, 48182, 96364, 120455, 240910, 481820, 1035913, 2071826, 4143652, 5179565, 10359130, 20718260]

約数ペア:

[(1, 20718260), (2, 10359130), (4, 5179565), (5, 4143652), (10, 2071826), (20, 1035913), (43, 481820), (86, 240910), (172, 120455), (215, 96364), (430, 48182), (860, 24091)]