21636400

素因数分解:

$2^4\times 5^2\times {\mathrm{54091}}^1$

素因数の和:54109

約数の個数: 30

約数和(自身を含む): 51982412

約数和(自身を除く): 30346012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 54091, 108182, 216364, 270455, 432728, 540910, 865456, 1081820, 1352275, 2163640, 2704550, 4327280, 5409100, 10818200, 21636400]

約数ペア:

[(1, 21636400), (2, 10818200), (4, 5409100), (5, 4327280), (8, 2704550), (10, 2163640), (16, 1352275), (20, 1081820), (25, 865456), (40, 540910), (50, 432728), (80, 270455), (100, 216364), (200, 108182), (400, 54091)]