28175000

素因数分解:

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

素因数の和:68

約数の個数: 144

約数和(自身を含む): 80151120

約数和(自身を除く): 51976120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 25, 28, 35, 40, 46, 49, 50, 56, 70, 92, 98, 100, 115, 125, 140, 161, 175, 184, 196, 200, 230, 245, 250, 280, 322, 350, 392, 460, 490, 500, 575, 625, 644, 700, 805, 875, 920, 980, 1000, 1127, 1150, 1225, 1250, 1288, 1400, 1610, 1750, 1960, 2254, 2300, 2450, 2500, 2875, 3125, 3220, 3500, 4025, 4375, 4508, 4600, 4900, 5000, 5635, 5750, 6125, 6250, 6440, 7000, 8050, 8750, 9016, 9800, 11270, 11500, 12250, 12500, 14375, 16100, 17500, 20125, 21875, 22540, 23000, 24500, 25000, 28175, 28750, 30625, 32200, 35000, 40250, 43750, 45080, 49000, 56350, 57500, 61250, 71875, 80500, 87500, 100625, 112700, 115000, 122500, 140875, 143750, 153125, 161000, 175000, 201250, 225400, 245000, 281750, 287500, 306250, 402500, 503125, 563500, 575000, 612500, 704375, 805000, 1006250, 1127000, 1225000, 1408750, 2012500, 2817500, 3521875, 4025000, 5635000, 7043750, 14087500, 28175000]

約数ペア:

[(1, 28175000), (2, 14087500), (4, 7043750), (5, 5635000), (7, 4025000), (8, 3521875), (10, 2817500), (14, 2012500), (20, 1408750), (23, 1225000), (25, 1127000), (28, 1006250), (35, 805000), (40, 704375), (46, 612500), (49, 575000), (50, 563500), (56, 503125), (70, 402500), (92, 306250), (98, 287500), (100, 281750), (115, 245000), (125, 225400), (140, 201250), (161, 175000), (175, 161000), (184, 153125), (196, 143750), (200, 140875), (230, 122500), (245, 115000), (250, 112700), (280, 100625), (322, 87500), (350, 80500), (392, 71875), (460, 61250), (490, 57500), (500, 56350), (575, 49000), (625, 45080), (644, 43750), (700, 40250), (805, 35000), (875, 32200), (920, 30625), (980, 28750), (1000, 28175), (1127, 25000), (1150, 24500), (1225, 23000), (1250, 22540), (1288, 21875), (1400, 20125), (1610, 17500), (1750, 16100), (1960, 14375), (2254, 12500), (2300, 12250), (2450, 11500), (2500, 11270), (2875, 9800), (3125, 9016), (3220, 8750), (3500, 8050), (4025, 7000), (4375, 6440), (4508, 6250), (4600, 6125), (4900, 5750), (5000, 5635)]