20174500

素因数分解:

$2^2\times 5^3\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:433

約数の個数: 48

約数和(自身を含む): 44514288

約数和(自身を除く): 24339788

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 157, 250, 257, 314, 500, 514, 628, 785, 1028, 1285, 1570, 2570, 3140, 3925, 5140, 6425, 7850, 12850, 15700, 19625, 25700, 32125, 39250, 40349, 64250, 78500, 80698, 128500, 161396, 201745, 403490, 806980, 1008725, 2017450, 4034900, 5043625, 10087250, 20174500]

約数ペア:

[(1, 20174500), (2, 10087250), (4, 5043625), (5, 4034900), (10, 2017450), (20, 1008725), (25, 806980), (50, 403490), (100, 201745), (125, 161396), (157, 128500), (250, 80698), (257, 78500), (314, 64250), (500, 40349), (514, 39250), (628, 32125), (785, 25700), (1028, 19625), (1285, 15700), (1570, 12850), (2570, 7850), (3140, 6425), (3925, 5140)]