19389640

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1279}}^1$

素因数の和:1669

約数の個数: 32

約数和(自身を含む): 43776000

約数和(自身を除く): 24386360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1279, 1516, 1895, 2558, 3032, 3790, 5116, 6395, 7580, 10232, 12790, 15160, 25580, 51160, 484741, 969482, 1938964, 2423705, 3877928, 4847410, 9694820, 19389640]

約数ペア:

[(1, 19389640), (2, 9694820), (4, 4847410), (5, 3877928), (8, 2423705), (10, 1938964), (20, 969482), (40, 484741), (379, 51160), (758, 25580), (1279, 15160), (1516, 12790), (1895, 10232), (2558, 7580), (3032, 6395), (3790, 5116)]