19787000

素因数分解:

$2^3\times 5^3\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:489

約数の個数: 64

約数和(自身を含む): 47399040

約数和(自身を除く): 27612040

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 47, 50, 94, 100, 125, 188, 200, 235, 250, 376, 421, 470, 500, 842, 940, 1000, 1175, 1684, 1880, 2105, 2350, 3368, 4210, 4700, 5875, 8420, 9400, 10525, 11750, 16840, 19787, 21050, 23500, 39574, 42100, 47000, 52625, 79148, 84200, 98935, 105250, 158296, 197870, 210500, 395740, 421000, 494675, 791480, 989350, 1978700, 2473375, 3957400, 4946750, 9893500, 19787000]

約数ペア:

[(1, 19787000), (2, 9893500), (4, 4946750), (5, 3957400), (8, 2473375), (10, 1978700), (20, 989350), (25, 791480), (40, 494675), (47, 421000), (50, 395740), (94, 210500), (100, 197870), (125, 158296), (188, 105250), (200, 98935), (235, 84200), (250, 79148), (376, 52625), (421, 47000), (470, 42100), (500, 39574), (842, 23500), (940, 21050), (1000, 19787), (1175, 16840), (1684, 11750), (1880, 10525), (2105, 9400), (2350, 8420), (3368, 5875), (4210, 4700)]