78890000

素因数分解:

$2^4\times 5^4\times 7^3\times {\mathrm{23}}^1$

素因数の和:72

約数の個数: 200

約数和(自身を含む): 232425600

約数和(自身を除く): 153535600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 25, 28, 35, 40, 46, 49, 50, 56, 70, 80, 92, 98, 100, 112, 115, 125, 140, 161, 175, 184, 196, 200, 230, 245, 250, 280, 322, 343, 350, 368, 392, 400, 460, 490, 500, 560, 575, 625, 644, 686, 700, 784, 805, 875, 920, 980, 1000, 1127, 1150, 1225, 1250, 1288, 1372, 1400, 1610, 1715, 1750, 1840, 1960, 2000, 2254, 2300, 2450, 2500, 2576, 2744, 2800, 2875, 3220, 3430, 3500, 3920, 4025, 4375, 4508, 4600, 4900, 5000, 5488, 5635, 5750, 6125, 6440, 6860, 7000, 7889, 8050, 8575, 8750, 9016, 9200, 9800, 10000, 11270, 11500, 12250, 12880, 13720, 14000, 14375, 15778, 16100, 17150, 17500, 18032, 19600, 20125, 22540, 23000, 24500, 27440, 28175, 28750, 30625, 31556, 32200, 34300, 35000, 39445, 40250, 42875, 45080, 46000, 49000, 56350, 57500, 61250, 63112, 64400, 68600, 70000, 78890, 80500, 85750, 90160, 98000, 100625, 112700, 115000, 122500, 126224, 137200, 140875, 157780, 161000, 171500, 197225, 201250, 214375, 225400, 230000, 245000, 281750, 315560, 322000, 343000, 394450, 402500, 428750, 450800, 490000, 563500, 631120, 686000, 704375, 788900, 805000, 857500, 986125, 1127000, 1408750, 1577800, 1610000, 1715000, 1972250, 2254000, 2817500, 3155600, 3430000, 3944500, 4930625, 5635000, 7889000, 9861250, 11270000, 15778000, 19722500, 39445000, 78890000]

約数ペア:

[(1, 78890000), (2, 39445000), (4, 19722500), (5, 15778000), (7, 11270000), (8, 9861250), (10, 7889000), (14, 5635000), (16, 4930625), (20, 3944500), (23, 3430000), (25, 3155600), (28, 2817500), (35, 2254000), (40, 1972250), (46, 1715000), (49, 1610000), (50, 1577800), (56, 1408750), (70, 1127000), (80, 986125), (92, 857500), (98, 805000), (100, 788900), (112, 704375), (115, 686000), (125, 631120), (140, 563500), (161, 490000), (175, 450800), (184, 428750), (196, 402500), (200, 394450), (230, 343000), (245, 322000), (250, 315560), (280, 281750), (322, 245000), (343, 230000), (350, 225400), (368, 214375), (392, 201250), (400, 197225), (460, 171500), (490, 161000), (500, 157780), (560, 140875), (575, 137200), (625, 126224), (644, 122500), (686, 115000), (700, 112700), (784, 100625), (805, 98000), (875, 90160), (920, 85750), (980, 80500), (1000, 78890), (1127, 70000), (1150, 68600), (1225, 64400), (1250, 63112), (1288, 61250), (1372, 57500), (1400, 56350), (1610, 49000), (1715, 46000), (1750, 45080), (1840, 42875), (1960, 40250), (2000, 39445), (2254, 35000), (2300, 34300), (2450, 32200), (2500, 31556), (2576, 30625), (2744, 28750), (2800, 28175), (2875, 27440), (3220, 24500), (3430, 23000), (3500, 22540), (3920, 20125), (4025, 19600), (4375, 18032), (4508, 17500), (4600, 17150), (4900, 16100), (5000, 15778), (5488, 14375), (5635, 14000), (5750, 13720), (6125, 12880), (6440, 12250), (6860, 11500), (7000, 11270), (7889, 10000), (8050, 9800), (8575, 9200), (8750, 9016)]