87500000

素因数分解:

$2^5\times 5^8\times 7^1$

素因数の和:57

約数の個数: 108

約数和(自身を含む): 246093624

約数和(自身を除く): 158593624

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 70, 80, 100, 112, 125, 140, 160, 175, 200, 224, 250, 280, 350, 400, 500, 560, 625, 700, 800, 875, 1000, 1120, 1250, 1400, 1750, 2000, 2500, 2800, 3125, 3500, 4000, 4375, 5000, 5600, 6250, 7000, 8750, 10000, 12500, 14000, 15625, 17500, 20000, 21875, 25000, 28000, 31250, 35000, 43750, 50000, 62500, 70000, 78125, 87500, 100000, 109375, 125000, 140000, 156250, 175000, 218750, 250000, 312500, 350000, 390625, 437500, 500000, 546875, 625000, 700000, 781250, 875000, 1093750, 1250000, 1562500, 1750000, 2187500, 2500000, 2734375, 3125000, 3500000, 4375000, 5468750, 6250000, 8750000, 10937500, 12500000, 17500000, 21875000, 43750000, 87500000]

約数ペア:

[(1, 87500000), (2, 43750000), (4, 21875000), (5, 17500000), (7, 12500000), (8, 10937500), (10, 8750000), (14, 6250000), (16, 5468750), (20, 4375000), (25, 3500000), (28, 3125000), (32, 2734375), (35, 2500000), (40, 2187500), (50, 1750000), (56, 1562500), (70, 1250000), (80, 1093750), (100, 875000), (112, 781250), (125, 700000), (140, 625000), (160, 546875), (175, 500000), (200, 437500), (224, 390625), (250, 350000), (280, 312500), (350, 250000), (400, 218750), (500, 175000), (560, 156250), (625, 140000), (700, 125000), (800, 109375), (875, 100000), (1000, 87500), (1120, 78125), (1250, 70000), (1400, 62500), (1750, 50000), (2000, 43750), (2500, 35000), (2800, 31250), (3125, 28000), (3500, 25000), (4000, 21875), (4375, 20000), (5000, 17500), (5600, 15625), (6250, 14000), (7000, 12500), (8750, 10000)]