21187995

素因数分解:

$3^1\times 5^1\times {\mathrm{379}}^1\times {\mathrm{3727}}^1$

素因数の和:4114

約数の個数: 16

約数和(自身を含む): 33999360

約数和(自身を除く): 12811365

約数列:

[1, 3, 5, 15, 379, 1137, 1895, 3727, 5685, 11181, 18635, 55905, 1412533, 4237599, 7062665, 21187995]

約数ペア:

[(1, 21187995), (3, 7062665), (5, 4237599), (15, 1412533), (379, 55905), (1137, 18635), (1895, 11181), (3727, 5685)]