20186800

素因数分解:

$2^4\times 5^2\times {\mathrm{109}}^1\times {\mathrm{463}}^1$

素因数の和:590

約数の個数: 60

約数和(自身を含む): 49049440

約数和(自身を除く): 28862640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 109, 200, 218, 400, 436, 463, 545, 872, 926, 1090, 1744, 1852, 2180, 2315, 2725, 3704, 4360, 4630, 5450, 7408, 8720, 9260, 10900, 11575, 18520, 21800, 23150, 37040, 43600, 46300, 50467, 92600, 100934, 185200, 201868, 252335, 403736, 504670, 807472, 1009340, 1261675, 2018680, 2523350, 4037360, 5046700, 10093400, 20186800]

約数ペア:

[(1, 20186800), (2, 10093400), (4, 5046700), (5, 4037360), (8, 2523350), (10, 2018680), (16, 1261675), (20, 1009340), (25, 807472), (40, 504670), (50, 403736), (80, 252335), (100, 201868), (109, 185200), (200, 100934), (218, 92600), (400, 50467), (436, 46300), (463, 43600), (545, 37040), (872, 23150), (926, 21800), (1090, 18520), (1744, 11575), (1852, 10900), (2180, 9260), (2315, 8720), (2725, 7408), (3704, 5450), (4360, 4630)]