19628728

素因数分解:

$2^3\times 7^1\times {\mathrm{409}}^1\times {\mathrm{857}}^1$

素因数の和:1279

約数の個数: 32

約数和(自身を含む): 42213600

約数和(自身を除く): 22584872

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 409, 818, 857, 1636, 1714, 2863, 3272, 3428, 5726, 5999, 6856, 11452, 11998, 22904, 23996, 47992, 350513, 701026, 1402052, 2453591, 2804104, 4907182, 9814364, 19628728]

約数ペア:

[(1, 19628728), (2, 9814364), (4, 4907182), (7, 2804104), (8, 2453591), (14, 1402052), (28, 701026), (56, 350513), (409, 47992), (818, 23996), (857, 22904), (1636, 11998), (1714, 11452), (2863, 6856), (3272, 5999), (3428, 5726)]