19934000

素因数分解:

$2^4\times 5^3\times {\mathrm{9967}}^1$

素因数の和:9990

約数の個数: 40

約数和(自身を含む): 48205248

約数和(自身を除く): 28271248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 9967, 19934, 39868, 49835, 79736, 99670, 159472, 199340, 249175, 398680, 498350, 797360, 996700, 1245875, 1993400, 2491750, 3986800, 4983500, 9967000, 19934000]

約数ペア:

[(1, 19934000), (2, 9967000), (4, 4983500), (5, 3986800), (8, 2491750), (10, 1993400), (16, 1245875), (20, 996700), (25, 797360), (40, 498350), (50, 398680), (80, 249175), (100, 199340), (125, 159472), (200, 99670), (250, 79736), (400, 49835), (500, 39868), (1000, 19934), (2000, 9967)]