81377500

素因数分解:

$2^2\times 5^4\times {\mathrm{43}}^1\times {\mathrm{757}}^1$

素因数の和:824

約数の個数: 60

約数和(自身を含む): 182335384

約数和(自身を除く): 100957884

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 430, 500, 625, 757, 860, 1075, 1250, 1514, 2150, 2500, 3028, 3785, 4300, 5375, 7570, 10750, 15140, 18925, 21500, 26875, 32551, 37850, 53750, 65102, 75700, 94625, 107500, 130204, 162755, 189250, 325510, 378500, 473125, 651020, 813775, 946250, 1627550, 1892500, 3255100, 4068875, 8137750, 16275500, 20344375, 40688750, 81377500]

約数ペア:

[(1, 81377500), (2, 40688750), (4, 20344375), (5, 16275500), (10, 8137750), (20, 4068875), (25, 3255100), (43, 1892500), (50, 1627550), (86, 946250), (100, 813775), (125, 651020), (172, 473125), (215, 378500), (250, 325510), (430, 189250), (500, 162755), (625, 130204), (757, 107500), (860, 94625), (1075, 75700), (1250, 65102), (1514, 53750), (2150, 37850), (2500, 32551), (3028, 26875), (3785, 21500), (4300, 18925), (5375, 15140), (7570, 10750)]