18771800

素因数分解:

$2^3\times 5^2\times {\mathrm{47}}^1\times {\mathrm{1997}}^1$

素因数の和:2060

約数の個数: 48

約数和(自身を含む): 44595360

約数和(自身を除く): 25823560

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 47, 50, 94, 100, 188, 200, 235, 376, 470, 940, 1175, 1880, 1997, 2350, 3994, 4700, 7988, 9400, 9985, 15976, 19970, 39940, 49925, 79880, 93859, 99850, 187718, 199700, 375436, 399400, 469295, 750872, 938590, 1877180, 2346475, 3754360, 4692950, 9385900, 18771800]

約数ペア:

[(1, 18771800), (2, 9385900), (4, 4692950), (5, 3754360), (8, 2346475), (10, 1877180), (20, 938590), (25, 750872), (40, 469295), (47, 399400), (50, 375436), (94, 199700), (100, 187718), (188, 99850), (200, 93859), (235, 79880), (376, 49925), (470, 39940), (940, 19970), (1175, 15976), (1880, 9985), (1997, 9400), (2350, 7988), (3994, 4700)]