20001500

素因数分解:

$2^2\times 5^3\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:495

約数の個数: 48

約数和(自身を含む): 44204160

約数和(自身を除く): 24202660

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 125, 218, 250, 367, 436, 500, 545, 734, 1090, 1468, 1835, 2180, 2725, 3670, 5450, 7340, 9175, 10900, 13625, 18350, 27250, 36700, 40003, 45875, 54500, 80006, 91750, 160012, 183500, 200015, 400030, 800060, 1000075, 2000150, 4000300, 5000375, 10000750, 20001500]

約数ペア:

[(1, 20001500), (2, 10000750), (4, 5000375), (5, 4000300), (10, 2000150), (20, 1000075), (25, 800060), (50, 400030), (100, 200015), (109, 183500), (125, 160012), (218, 91750), (250, 80006), (367, 54500), (436, 45875), (500, 40003), (545, 36700), (734, 27250), (1090, 18350), (1468, 13625), (1835, 10900), (2180, 9175), (2725, 7340), (3670, 5450)]