20428500

素因数分解:

$2^2\times 3^1\times 5^3\times {\mathrm{13619}}^1$

素因数の和:13641

約数の個数: 48

約数和(自身を含む): 59492160

約数和(自身を除く): 39063660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 125, 150, 250, 300, 375, 500, 750, 1500, 13619, 27238, 40857, 54476, 68095, 81714, 136190, 163428, 204285, 272380, 340475, 408570, 680950, 817140, 1021425, 1361900, 1702375, 2042850, 3404750, 4085700, 5107125, 6809500, 10214250, 20428500]

約数ペア:

[(1, 20428500), (2, 10214250), (3, 6809500), (4, 5107125), (5, 4085700), (6, 3404750), (10, 2042850), (12, 1702375), (15, 1361900), (20, 1021425), (25, 817140), (30, 680950), (50, 408570), (60, 340475), (75, 272380), (100, 204285), (125, 163428), (150, 136190), (250, 81714), (300, 68095), (375, 54476), (500, 40857), (750, 27238), (1500, 13619)]