20658460

素因数分解:

$2^2\times 5^1\times {\mathrm{827}}^1\times {\mathrm{1249}}^1$

素因数の和:2085

約数の個数: 24

約数和(自身を含む): 43470000

約数和(自身を除く): 22811540

約数列:

[1, 2, 4, 5, 10, 20, 827, 1249, 1654, 2498, 3308, 4135, 4996, 6245, 8270, 12490, 16540, 24980, 1032923, 2065846, 4131692, 5164615, 10329230, 20658460]

約数ペア:

[(1, 20658460), (2, 10329230), (4, 5164615), (5, 4131692), (10, 2065846), (20, 1032923), (827, 24980), (1249, 16540), (1654, 12490), (2498, 8270), (3308, 6245), (4135, 4996)]