20478740

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{44519}}^1$

素因数の和:44551

約数の個数: 24

約数和(自身を含む): 44876160

約数和(自身を除く): 24397420

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 44519, 89038, 178076, 222595, 445190, 890380, 1023937, 2047874, 4095748, 5119685, 10239370, 20478740]

約数ペア:

[(1, 20478740), (2, 10239370), (4, 5119685), (5, 4095748), (10, 2047874), (20, 1023937), (23, 890380), (46, 445190), (92, 222595), (115, 178076), (230, 89038), (460, 44519)]