20446000

素因数分解:

$2^4\times 5^3\times {\mathrm{10223}}^1$

素因数の和:10246

約数の個数: 40

約数和(自身を含む): 49443264

約数和(自身を除く): 28997264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10223, 20446, 40892, 51115, 81784, 102230, 163568, 204460, 255575, 408920, 511150, 817840, 1022300, 1277875, 2044600, 2555750, 4089200, 5111500, 10223000, 20446000]

約数ペア:

[(1, 20446000), (2, 10223000), (4, 5111500), (5, 4089200), (8, 2555750), (10, 2044600), (16, 1277875), (20, 1022300), (25, 817840), (40, 511150), (50, 408920), (80, 255575), (100, 204460), (125, 163568), (200, 102230), (250, 81784), (400, 51115), (500, 40892), (1000, 20446), (2000, 10223)]