21382000

素因数分解:

$2^4\times 5^3\times {\mathrm{10691}}^1$

素因数の和:10714

約数の個数: 40

約数和(自身を含む): 51706512

約数和(自身を除く): 30324512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10691, 21382, 42764, 53455, 85528, 106910, 171056, 213820, 267275, 427640, 534550, 855280, 1069100, 1336375, 2138200, 2672750, 4276400, 5345500, 10691000, 21382000]

約数ペア:

[(1, 21382000), (2, 10691000), (4, 5345500), (5, 4276400), (8, 2672750), (10, 2138200), (16, 1336375), (20, 1069100), (25, 855280), (40, 534550), (50, 427640), (80, 267275), (100, 213820), (125, 171056), (200, 106910), (250, 85528), (400, 53455), (500, 42764), (1000, 21382), (2000, 10691)]