20009840

素因数分解:

$2^4\times 5^1\times {\mathrm{250123}}^1$

素因数の和:250136

約数の個数: 20

約数和(自身を含む): 46523064

約数和(自身を除く): 26513224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 250123, 500246, 1000492, 1250615, 2000984, 2501230, 4001968, 5002460, 10004920, 20009840]

約数ペア:

[(1, 20009840), (2, 10004920), (4, 5002460), (5, 4001968), (8, 2501230), (10, 2000984), (16, 1250615), (20, 1000492), (40, 500246), (80, 250123)]