21171500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{263}}^1$

素因数の和:312

約数の個数: 96

約数和(自身を含む): 55351296

約数和(自身を除く): 34179796

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 25, 28, 35, 46, 50, 70, 92, 100, 115, 125, 140, 161, 175, 230, 250, 263, 322, 350, 460, 500, 526, 575, 644, 700, 805, 875, 1052, 1150, 1315, 1610, 1750, 1841, 2300, 2630, 2875, 3220, 3500, 3682, 4025, 5260, 5750, 6049, 6575, 7364, 8050, 9205, 11500, 12098, 13150, 16100, 18410, 20125, 24196, 26300, 30245, 32875, 36820, 40250, 42343, 46025, 60490, 65750, 80500, 84686, 92050, 120980, 131500, 151225, 169372, 184100, 211715, 230125, 302450, 423430, 460250, 604900, 756125, 846860, 920500, 1058575, 1512250, 2117150, 3024500, 4234300, 5292875, 10585750, 21171500]

約数ペア:

[(1, 21171500), (2, 10585750), (4, 5292875), (5, 4234300), (7, 3024500), (10, 2117150), (14, 1512250), (20, 1058575), (23, 920500), (25, 846860), (28, 756125), (35, 604900), (46, 460250), (50, 423430), (70, 302450), (92, 230125), (100, 211715), (115, 184100), (125, 169372), (140, 151225), (161, 131500), (175, 120980), (230, 92050), (250, 84686), (263, 80500), (322, 65750), (350, 60490), (460, 46025), (500, 42343), (526, 40250), (575, 36820), (644, 32875), (700, 30245), (805, 26300), (875, 24196), (1052, 20125), (1150, 18410), (1315, 16100), (1610, 13150), (1750, 12098), (1841, 11500), (2300, 9205), (2630, 8050), (2875, 7364), (3220, 6575), (3500, 6049), (3682, 5750), (4025, 5260)]