51049840

素因数分解:

$2^4\times 5^1\times {\mathrm{638123}}^1$

素因数の和:638136

約数の個数: 20

約数和(自身を含む): 118691064

約数和(自身を除く): 67641224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 638123, 1276246, 2552492, 3190615, 5104984, 6381230, 10209968, 12762460, 25524920, 51049840]

約数ペア:

[(1, 51049840), (2, 25524920), (4, 12762460), (5, 10209968), (8, 6381230), (10, 5104984), (16, 3190615), (20, 2552492), (40, 1276246), (80, 638123)]