637367620

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{80273}}^1$

素因数の和:80679

約数の個数: 24

約数和(自身を含む): 1341860184

約数和(自身を除く): 704492564

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 80273, 160546, 321092, 401365, 802730, 1605460, 31868381, 63736762, 127473524, 159341905, 318683810, 637367620]

約数ペア:

[(1, 637367620), (2, 318683810), (4, 159341905), (5, 127473524), (10, 63736762), (20, 31868381), (397, 1605460), (794, 802730), (1588, 401365), (1985, 321092), (3970, 160546), (7940, 80273)]