21180760

素因数分解:

$2^3\times 5^1\times {\mathrm{529519}}^1$

素因数の和:529530

約数の個数: 16

約数和(自身を含む): 47656800

約数和(自身を除く): 26476040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 529519, 1059038, 2118076, 2647595, 4236152, 5295190, 10590380, 21180760]

約数ペア:

[(1, 21180760), (2, 10590380), (4, 5295190), (5, 4236152), (8, 2647595), (10, 2118076), (20, 1059038), (40, 529519)]