4075000

素因数分解:

$2^3\times 5^5\times {\mathrm{163}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 9608760

約数和(自身を除く): 5533760

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 163, 200, 250, 326, 500, 625, 652, 815, 1000, 1250, 1304, 1630, 2500, 3125, 3260, 4075, 5000, 6250, 6520, 8150, 12500, 16300, 20375, 25000, 32600, 40750, 81500, 101875, 163000, 203750, 407500, 509375, 815000, 1018750, 2037500, 4075000]

約数ペア:

[(1, 4075000), (2, 2037500), (4, 1018750), (5, 815000), (8, 509375), (10, 407500), (20, 203750), (25, 163000), (40, 101875), (50, 81500), (100, 40750), (125, 32600), (163, 25000), (200, 20375), (250, 16300), (326, 12500), (500, 8150), (625, 6520), (652, 6250), (815, 5000), (1000, 4075), (1250, 3260), (1304, 3125), (1630, 2500)]