20904340

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{4337}}^1$

素因数の和:4587

約数の個数: 24

約数和(自身を含む): 44091432

約数和(自身を除く): 23187092

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4337, 4820, 8674, 17348, 21685, 43370, 86740, 1045217, 2090434, 4180868, 5226085, 10452170, 20904340]

約数ペア:

[(1, 20904340), (2, 10452170), (4, 5226085), (5, 4180868), (10, 2090434), (20, 1045217), (241, 86740), (482, 43370), (964, 21685), (1205, 17348), (2410, 8674), (4337, 4820)]