70000000

素因数分解:

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

素因数の和:56

約数の個数: 128

約数和(自身を含む): 199218240

約数和(自身を除く): 129218240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 80, 100, 112, 125, 128, 140, 160, 175, 200, 224, 250, 280, 320, 350, 400, 448, 500, 560, 625, 640, 700, 800, 875, 896, 1000, 1120, 1250, 1400, 1600, 1750, 2000, 2240, 2500, 2800, 3125, 3200, 3500, 4000, 4375, 4480, 5000, 5600, 6250, 7000, 8000, 8750, 10000, 11200, 12500, 14000, 15625, 16000, 17500, 20000, 21875, 22400, 25000, 28000, 31250, 35000, 40000, 43750, 50000, 56000, 62500, 70000, 78125, 80000, 87500, 100000, 109375, 112000, 125000, 140000, 156250, 175000, 200000, 218750, 250000, 280000, 312500, 350000, 400000, 437500, 500000, 546875, 560000, 625000, 700000, 875000, 1000000, 1093750, 1250000, 1400000, 1750000, 2000000, 2187500, 2500000, 2800000, 3500000, 4375000, 5000000, 7000000, 8750000, 10000000, 14000000, 17500000, 35000000, 70000000]

約数ペア:

[(1, 70000000), (2, 35000000), (4, 17500000), (5, 14000000), (7, 10000000), (8, 8750000), (10, 7000000), (14, 5000000), (16, 4375000), (20, 3500000), (25, 2800000), (28, 2500000), (32, 2187500), (35, 2000000), (40, 1750000), (50, 1400000), (56, 1250000), (64, 1093750), (70, 1000000), (80, 875000), (100, 700000), (112, 625000), (125, 560000), (128, 546875), (140, 500000), (160, 437500), (175, 400000), (200, 350000), (224, 312500), (250, 280000), (280, 250000), (320, 218750), (350, 200000), (400, 175000), (448, 156250), (500, 140000), (560, 125000), (625, 112000), (640, 109375), (700, 100000), (800, 87500), (875, 80000), (896, 78125), (1000, 70000), (1120, 62500), (1250, 56000), (1400, 50000), (1600, 43750), (1750, 40000), (2000, 35000), (2240, 31250), (2500, 28000), (2800, 25000), (3125, 22400), (3200, 21875), (3500, 20000), (4000, 17500), (4375, 16000), (4480, 15625), (5000, 14000), (5600, 12500), (6250, 11200), (7000, 10000), (8000, 8750)]