2187500

素因数分解:

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

素因数の和:46

約数の個数: 48

約数和(自身を含む): 5468736

約数和(自身を除く): 3281236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 350, 500, 625, 700, 875, 1250, 1750, 2500, 3125, 3500, 4375, 6250, 8750, 12500, 15625, 17500, 21875, 31250, 43750, 62500, 78125, 87500, 109375, 156250, 218750, 312500, 437500, 546875, 1093750, 2187500]

約数ペア:

[(1, 2187500), (2, 1093750), (4, 546875), (5, 437500), (7, 312500), (10, 218750), (14, 156250), (20, 109375), (25, 87500), (28, 78125), (35, 62500), (50, 43750), (70, 31250), (100, 21875), (125, 17500), (140, 15625), (175, 12500), (250, 8750), (350, 6250), (500, 4375), (625, 3500), (700, 3125), (875, 2500), (1250, 1750)]