18991690

素因数分解:

$2^1\times 5^1\times {\mathrm{379}}^1\times {\mathrm{5011}}^1$

素因数の和:5397

約数の個数: 16

約数和(自身を含む): 34282080

約数和(自身を除く): 15290390

約数列:

[1, 2, 5, 10, 379, 758, 1895, 3790, 5011, 10022, 25055, 50110, 1899169, 3798338, 9495845, 18991690]

約数ペア:

[(1, 18991690), (2, 9495845), (5, 3798338), (10, 1899169), (379, 50110), (758, 25055), (1895, 10022), (3790, 5011)]