31150000

素因数分解:

$2^4\times 5^5\times 7^1\times {\mathrm{89}}^1$

素因数の和:129

約数の個数: 120

約数和(自身を含む): 87181920

約数和(自身を除く): 56031920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 89, 100, 112, 125, 140, 175, 178, 200, 250, 280, 350, 356, 400, 445, 500, 560, 623, 625, 700, 712, 875, 890, 1000, 1246, 1250, 1400, 1424, 1750, 1780, 2000, 2225, 2492, 2500, 2800, 3115, 3125, 3500, 3560, 4375, 4450, 4984, 5000, 6230, 6250, 7000, 7120, 8750, 8900, 9968, 10000, 11125, 12460, 12500, 14000, 15575, 17500, 17800, 21875, 22250, 24920, 25000, 31150, 35000, 35600, 43750, 44500, 49840, 50000, 55625, 62300, 70000, 77875, 87500, 89000, 111250, 124600, 155750, 175000, 178000, 222500, 249200, 278125, 311500, 350000, 389375, 445000, 556250, 623000, 778750, 890000, 1112500, 1246000, 1557500, 1946875, 2225000, 3115000, 3893750, 4450000, 6230000, 7787500, 15575000, 31150000]

約数ペア:

[(1, 31150000), (2, 15575000), (4, 7787500), (5, 6230000), (7, 4450000), (8, 3893750), (10, 3115000), (14, 2225000), (16, 1946875), (20, 1557500), (25, 1246000), (28, 1112500), (35, 890000), (40, 778750), (50, 623000), (56, 556250), (70, 445000), (80, 389375), (89, 350000), (100, 311500), (112, 278125), (125, 249200), (140, 222500), (175, 178000), (178, 175000), (200, 155750), (250, 124600), (280, 111250), (350, 89000), (356, 87500), (400, 77875), (445, 70000), (500, 62300), (560, 55625), (623, 50000), (625, 49840), (700, 44500), (712, 43750), (875, 35600), (890, 35000), (1000, 31150), (1246, 25000), (1250, 24920), (1400, 22250), (1424, 21875), (1750, 17800), (1780, 17500), (2000, 15575), (2225, 14000), (2492, 12500), (2500, 12460), (2800, 11125), (3115, 10000), (3125, 9968), (3500, 8900), (3560, 8750), (4375, 7120), (4450, 7000), (4984, 6250), (5000, 6230)]