28863760

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{857}}^1$

素因数の和:1291

約数の個数: 40

約数和(自身を含む): 67346136

約数和(自身を除く): 38482376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 842, 857, 1684, 1714, 2105, 3368, 3428, 4210, 4285, 6736, 6856, 8420, 8570, 13712, 16840, 17140, 33680, 34280, 68560, 360797, 721594, 1443188, 1803985, 2886376, 3607970, 5772752, 7215940, 14431880, 28863760]

約数ペア:

[(1, 28863760), (2, 14431880), (4, 7215940), (5, 5772752), (8, 3607970), (10, 2886376), (16, 1803985), (20, 1443188), (40, 721594), (80, 360797), (421, 68560), (842, 34280), (857, 33680), (1684, 17140), (1714, 16840), (2105, 13712), (3368, 8570), (3428, 8420), (4210, 6856), (4285, 6736)]