128977400

素因数分解:

$2^3\times 5^2\times {\mathrm{47}}^1\times {\mathrm{13721}}^1$

素因数の和:13784

約数の個数: 48

約数和(自身を含む): 306275040

約数和(自身を除く): 177297640

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 47, 50, 94, 100, 188, 200, 235, 376, 470, 940, 1175, 1880, 2350, 4700, 9400, 13721, 27442, 54884, 68605, 109768, 137210, 274420, 343025, 548840, 644887, 686050, 1289774, 1372100, 2579548, 2744200, 3224435, 5159096, 6448870, 12897740, 16122175, 25795480, 32244350, 64488700, 128977400]

約数ペア:

[(1, 128977400), (2, 64488700), (4, 32244350), (5, 25795480), (8, 16122175), (10, 12897740), (20, 6448870), (25, 5159096), (40, 3224435), (47, 2744200), (50, 2579548), (94, 1372100), (100, 1289774), (188, 686050), (200, 644887), (235, 548840), (376, 343025), (470, 274420), (940, 137210), (1175, 109768), (1880, 68605), (2350, 54884), (4700, 27442), (9400, 13721)]