199440880

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{57977}}^1$

素因数の和:58033

約数の個数: 40

約数和(自身を含む): 474491952

約数和(自身を除く): 275051072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 57977, 115954, 231908, 289885, 463816, 579770, 927632, 1159540, 2319080, 2493011, 4638160, 4986022, 9972044, 12465055, 19944088, 24930110, 39888176, 49860220, 99720440, 199440880]

約数ペア:

[(1, 199440880), (2, 99720440), (4, 49860220), (5, 39888176), (8, 24930110), (10, 19944088), (16, 12465055), (20, 9972044), (40, 4986022), (43, 4638160), (80, 2493011), (86, 2319080), (172, 1159540), (215, 927632), (344, 579770), (430, 463816), (688, 289885), (860, 231908), (1720, 115954), (3440, 57977)]