199432880

素因数分解:

$2^4\times 5^1\times {\mathrm{643}}^1\times {\mathrm{3877}}^1$

素因数の和:4533

約数の個数: 40

約数和(自身を含む): 464522352

約数和(自身を除く): 265089472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 643, 1286, 2572, 3215, 3877, 5144, 6430, 7754, 10288, 12860, 15508, 19385, 25720, 31016, 38770, 51440, 62032, 77540, 155080, 310160, 2492911, 4985822, 9971644, 12464555, 19943288, 24929110, 39886576, 49858220, 99716440, 199432880]

約数ペア:

[(1, 199432880), (2, 99716440), (4, 49858220), (5, 39886576), (8, 24929110), (10, 19943288), (16, 12464555), (20, 9971644), (40, 4985822), (80, 2492911), (643, 310160), (1286, 155080), (2572, 77540), (3215, 62032), (3877, 51440), (5144, 38770), (6430, 31016), (7754, 25720), (10288, 19385), (12860, 15508)]