21516760

素因数分解:

$2^3\times 5^1\times {\mathrm{537919}}^1$

素因数の和:537930

約数の個数: 16

約数和(自身を含む): 48412800

約数和(自身を除く): 26896040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 537919, 1075838, 2151676, 2689595, 4303352, 5379190, 10758380, 21516760]

約数ペア:

[(1, 21516760), (2, 10758380), (4, 5379190), (5, 4303352), (8, 2689595), (10, 2151676), (20, 1075838), (40, 537919)]