19794640

素因数分解:

$2^4\times 5^1\times {\mathrm{247433}}^1$

素因数の和:247446

約数の個数: 20

約数和(自身を含む): 46022724

約数和(自身を除く): 26228084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 247433, 494866, 989732, 1237165, 1979464, 2474330, 3958928, 4948660, 9897320, 19794640]

約数ペア:

[(1, 19794640), (2, 9897320), (4, 4948660), (5, 3958928), (8, 2474330), (10, 1979464), (16, 1237165), (20, 989732), (40, 494866), (80, 247433)]