1988000

素因数分解:

$2^5\times 5^3\times 7^1\times {\mathrm{71}}^1$

素因数の和:103

約数の個数: 96

約数和(自身を含む): 5660928

約数和(自身を除く): 3672928

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, 700, 710, 800, 875, 994, 1000, 1120, 1136, 1400, 1420, 1750, 1775, 1988, 2000, 2272, 2485, 2800, 2840, 3500, 3550, 3976, 4000, 4970, 5600, 5680, 7000, 7100, 7952, 8875, 9940, 11360, 12425, 14000, 14200, 15904, 17750, 19880, 24850, 28000, 28400, 35500, 39760, 49700, 56800, 62125, 71000, 79520, 99400, 124250, 142000, 198800, 248500, 284000, 397600, 497000, 994000, 1988000]

約数ペア:

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