20886740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21313}}^1$

素因数の和:21336

約数の個数: 36

約数和(自身を含む): 51025716

約数和(自身を除く): 30138976

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21313, 42626, 85252, 106565, 149191, 213130, 298382, 426260, 596764, 745955, 1044337, 1491910, 2088674, 2983820, 4177348, 5221685, 10443370, 20886740]

約数ペア:

[(1, 20886740), (2, 10443370), (4, 5221685), (5, 4177348), (7, 2983820), (10, 2088674), (14, 1491910), (20, 1044337), (28, 745955), (35, 596764), (49, 426260), (70, 298382), (98, 213130), (140, 149191), (196, 106565), (245, 85252), (490, 42626), (980, 21313)]