21054200

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^2\times {\mathrm{199}}^1$

素因数の和:261

約数の個数: 72

約数和(自身を含む): 51429000

約数和(自身を除く): 30374800

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 184, 199, 200, 230, 398, 460, 529, 575, 796, 920, 995, 1058, 1150, 1592, 1990, 2116, 2300, 2645, 3980, 4232, 4577, 4600, 4975, 5290, 7960, 9154, 9950, 10580, 13225, 18308, 19900, 21160, 22885, 26450, 36616, 39800, 45770, 52900, 91540, 105271, 105800, 114425, 183080, 210542, 228850, 421084, 457700, 526355, 842168, 915400, 1052710, 2105420, 2631775, 4210840, 5263550, 10527100, 21054200]

約数ペア:

[(1, 21054200), (2, 10527100), (4, 5263550), (5, 4210840), (8, 2631775), (10, 2105420), (20, 1052710), (23, 915400), (25, 842168), (40, 526355), (46, 457700), (50, 421084), (92, 228850), (100, 210542), (115, 183080), (184, 114425), (199, 105800), (200, 105271), (230, 91540), (398, 52900), (460, 45770), (529, 39800), (575, 36616), (796, 26450), (920, 22885), (995, 21160), (1058, 19900), (1150, 18308), (1592, 13225), (1990, 10580), (2116, 9950), (2300, 9154), (2645, 7960), (3980, 5290), (4232, 4975), (4577, 4600)]