20606000

素因数分解:

$2^4\times 5^3\times {\mathrm{10303}}^1$

素因数の和:10326

約数の個数: 40

約数和(自身を含む): 49830144

約数和(自身を除く): 29224144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10303, 20606, 41212, 51515, 82424, 103030, 164848, 206060, 257575, 412120, 515150, 824240, 1030300, 1287875, 2060600, 2575750, 4121200, 5151500, 10303000, 20606000]

約数ペア:

[(1, 20606000), (2, 10303000), (4, 5151500), (5, 4121200), (8, 2575750), (10, 2060600), (16, 1287875), (20, 1030300), (25, 824240), (40, 515150), (50, 412120), (80, 257575), (100, 206060), (125, 164848), (200, 103030), (250, 82424), (400, 51515), (500, 41212), (1000, 20606), (2000, 10303)]