21958000

素因数分解:

$2^4\times 5^3\times {\mathrm{10979}}^1$

素因数の和:11002

約数の個数: 40

約数和(自身を含む): 53099280

約数和(自身を除く): 31141280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10979, 21958, 43916, 54895, 87832, 109790, 175664, 219580, 274475, 439160, 548950, 878320, 1097900, 1372375, 2195800, 2744750, 4391600, 5489500, 10979000, 21958000]

約数ペア:

[(1, 21958000), (2, 10979000), (4, 5489500), (5, 4391600), (8, 2744750), (10, 2195800), (16, 1372375), (20, 1097900), (25, 878320), (40, 548950), (50, 439160), (80, 274475), (100, 219580), (125, 175664), (200, 109790), (250, 87832), (400, 54895), (500, 43916), (1000, 21958), (2000, 10979)]