20204920

素因数分解:

$2^3\times 5^1\times {\mathrm{505123}}^1$

素因数の和:505134

約数の個数: 16

約数和(自身を含む): 45461160

約数和(自身を除く): 25256240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 505123, 1010246, 2020492, 2525615, 4040984, 5051230, 10102460, 20204920]

約数ペア:

[(1, 20204920), (2, 10102460), (4, 5051230), (5, 4040984), (8, 2525615), (10, 2020492), (20, 1010246), (40, 505123)]