21811040

素因数分解:

$2^5\times 5^1\times {\mathrm{136319}}^1$

素因数の和:136334

約数の個数: 24

約数和(自身を含む): 51528960

約数和(自身を除く): 29717920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 136319, 272638, 545276, 681595, 1090552, 1363190, 2181104, 2726380, 4362208, 5452760, 10905520, 21811040]

約数ペア:

[(1, 21811040), (2, 10905520), (4, 5452760), (5, 4362208), (8, 2726380), (10, 2181104), (16, 1363190), (20, 1090552), (32, 681595), (40, 545276), (80, 272638), (160, 136319)]