20695000

素因数分解:

$2^3\times 5^4\times {\mathrm{4139}}^1$

素因数の和:4165

約数の個数: 40

約数和(自身を含む): 48500100

約数和(自身を除く): 27805100

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 4139, 5000, 8278, 16556, 20695, 33112, 41390, 82780, 103475, 165560, 206950, 413900, 517375, 827800, 1034750, 2069500, 2586875, 4139000, 5173750, 10347500, 20695000]

約数ペア:

[(1, 20695000), (2, 10347500), (4, 5173750), (5, 4139000), (8, 2586875), (10, 2069500), (20, 1034750), (25, 827800), (40, 517375), (50, 413900), (100, 206950), (125, 165560), (200, 103475), (250, 82780), (500, 41390), (625, 33112), (1000, 20695), (1250, 16556), (2500, 8278), (4139, 5000)]