4450000

素因数分解:

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

素因数の和:122

約数の個数: 60

約数和(自身を含む): 10897740

約数和(自身を除く): 6447740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 89, 100, 125, 178, 200, 250, 356, 400, 445, 500, 625, 712, 890, 1000, 1250, 1424, 1780, 2000, 2225, 2500, 3125, 3560, 4450, 5000, 6250, 7120, 8900, 10000, 11125, 12500, 17800, 22250, 25000, 35600, 44500, 50000, 55625, 89000, 111250, 178000, 222500, 278125, 445000, 556250, 890000, 1112500, 2225000, 4450000]

約数ペア:

[(1, 4450000), (2, 2225000), (4, 1112500), (5, 890000), (8, 556250), (10, 445000), (16, 278125), (20, 222500), (25, 178000), (40, 111250), (50, 89000), (80, 55625), (89, 50000), (100, 44500), (125, 35600), (178, 25000), (200, 22250), (250, 17800), (356, 12500), (400, 11125), (445, 10000), (500, 8900), (625, 7120), (712, 6250), (890, 5000), (1000, 4450), (1250, 3560), (1424, 3125), (1780, 2500), (2000, 2225)]