21331040

素因数分解:

$2^5\times 5^1\times {\mathrm{133319}}^1$

素因数の和:133334

約数の個数: 24

約数和(自身を含む): 50394960

約数和(自身を除く): 29063920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133319, 266638, 533276, 666595, 1066552, 1333190, 2133104, 2666380, 4266208, 5332760, 10665520, 21331040]

約数ペア:

[(1, 21331040), (2, 10665520), (4, 5332760), (5, 4266208), (8, 2666380), (10, 2133104), (16, 1333190), (20, 1066552), (32, 666595), (40, 533276), (80, 266638), (160, 133319)]