19860200

素因数分解:

$2^3\times 5^2\times {\mathrm{199}}^1\times {\mathrm{499}}^1$

素因数の和:714

約数の個数: 48

約数和(自身を含む): 46500000

約数和(自身を除く): 26639800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 199, 200, 398, 499, 796, 995, 998, 1592, 1990, 1996, 2495, 3980, 3992, 4975, 4990, 7960, 9950, 9980, 12475, 19900, 19960, 24950, 39800, 49900, 99301, 99800, 198602, 397204, 496505, 794408, 993010, 1986020, 2482525, 3972040, 4965050, 9930100, 19860200]

約数ペア:

[(1, 19860200), (2, 9930100), (4, 4965050), (5, 3972040), (8, 2482525), (10, 1986020), (20, 993010), (25, 794408), (40, 496505), (50, 397204), (100, 198602), (199, 99800), (200, 99301), (398, 49900), (499, 39800), (796, 24950), (995, 19960), (998, 19900), (1592, 12475), (1990, 9980), (1996, 9950), (2495, 7960), (3980, 4990), (3992, 4975)]