79872500

素因数分解:

$2^2\times 5^4\times {\mathrm{43}}^1\times {\mathrm{743}}^1$

素因数の和:810

約数の個数: 60

約数和(自身を含む): 178967712

約数和(自身を除く): 99095212

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 430, 500, 625, 743, 860, 1075, 1250, 1486, 2150, 2500, 2972, 3715, 4300, 5375, 7430, 10750, 14860, 18575, 21500, 26875, 31949, 37150, 53750, 63898, 74300, 92875, 107500, 127796, 159745, 185750, 319490, 371500, 464375, 638980, 798725, 928750, 1597450, 1857500, 3194900, 3993625, 7987250, 15974500, 19968125, 39936250, 79872500]

約数ペア:

[(1, 79872500), (2, 39936250), (4, 19968125), (5, 15974500), (10, 7987250), (20, 3993625), (25, 3194900), (43, 1857500), (50, 1597450), (86, 928750), (100, 798725), (125, 638980), (172, 464375), (215, 371500), (250, 319490), (430, 185750), (500, 159745), (625, 127796), (743, 107500), (860, 92875), (1075, 74300), (1250, 63898), (1486, 53750), (2150, 37150), (2500, 31949), (2972, 26875), (3715, 21500), (4300, 18575), (5375, 14860), (7430, 10750)]