9940000

素因数分解:

$2^5\times 5^4\times 7^1\times {\mathrm{71}}^1$

素因数の和:108

約数の個数: 120

約数和(自身を含む): 28340928

約数和(自身を除く): 18400928

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 70, 71, 80, 100, 112, 125, 140, 142, 160, 175, 200, 224, 250, 280, 284, 350, 355, 400, 497, 500, 560, 568, 625, 700, 710, 800, 875, 994, 1000, 1120, 1136, 1250, 1400, 1420, 1750, 1775, 1988, 2000, 2272, 2485, 2500, 2800, 2840, 3500, 3550, 3976, 4000, 4375, 4970, 5000, 5600, 5680, 7000, 7100, 7952, 8750, 8875, 9940, 10000, 11360, 12425, 14000, 14200, 15904, 17500, 17750, 19880, 20000, 24850, 28000, 28400, 35000, 35500, 39760, 44375, 49700, 56800, 62125, 70000, 71000, 79520, 88750, 99400, 124250, 140000, 142000, 177500, 198800, 248500, 284000, 310625, 355000, 397600, 497000, 621250, 710000, 994000, 1242500, 1420000, 1988000, 2485000, 4970000, 9940000]

約数ペア:

[(1, 9940000), (2, 4970000), (4, 2485000), (5, 1988000), (7, 1420000), (8, 1242500), (10, 994000), (14, 710000), (16, 621250), (20, 497000), (25, 397600), (28, 355000), (32, 310625), (35, 284000), (40, 248500), (50, 198800), (56, 177500), (70, 142000), (71, 140000), (80, 124250), (100, 99400), (112, 88750), (125, 79520), (140, 71000), (142, 70000), (160, 62125), (175, 56800), (200, 49700), (224, 44375), (250, 39760), (280, 35500), (284, 35000), (350, 28400), (355, 28000), (400, 24850), (497, 20000), (500, 19880), (560, 17750), (568, 17500), (625, 15904), (700, 14200), (710, 14000), (800, 12425), (875, 11360), (994, 10000), (1000, 9940), (1120, 8875), (1136, 8750), (1250, 7952), (1400, 7100), (1420, 7000), (1750, 5680), (1775, 5600), (1988, 5000), (2000, 4970), (2272, 4375), (2485, 4000), (2500, 3976), (2800, 3550), (2840, 3500)]