19804760

素因数分解:

$2^3\times 5^1\times {\mathrm{495119}}^1$

素因数の和:495130

約数の個数: 16

約数和(自身を含む): 44560800

約数和(自身を除く): 24756040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 495119, 990238, 1980476, 2475595, 3960952, 4951190, 9902380, 19804760]

約数ペア:

[(1, 19804760), (2, 9902380), (4, 4951190), (5, 3960952), (8, 2475595), (10, 1980476), (20, 990238), (40, 495119)]