21771740

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{4337}}^1$

素因数の和:4597

約数の個数: 24

約数和(自身を含む): 45913392

約数和(自身を除く): 24141652

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 4337, 5020, 8674, 17348, 21685, 43370, 86740, 1088587, 2177174, 4354348, 5442935, 10885870, 21771740]

約数ペア:

[(1, 21771740), (2, 10885870), (4, 5442935), (5, 4354348), (10, 2177174), (20, 1088587), (251, 86740), (502, 43370), (1004, 21685), (1255, 17348), (2510, 8674), (4337, 5020)]