20432800

素因数分解:

$2^5\times 5^2\times {\mathrm{25541}}^1$

素因数の和:25561

約数の個数: 36

約数和(自身を含む): 49883526

約数和(自身を除く): 29450726

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 25541, 51082, 102164, 127705, 204328, 255410, 408656, 510820, 638525, 817312, 1021640, 1277050, 2043280, 2554100, 4086560, 5108200, 10216400, 20432800]

約数ペア:

[(1, 20432800), (2, 10216400), (4, 5108200), (5, 4086560), (8, 2554100), (10, 2043280), (16, 1277050), (20, 1021640), (25, 817312), (32, 638525), (40, 510820), (50, 408656), (80, 255410), (100, 204328), (160, 127705), (200, 102164), (400, 51082), (800, 25541)]