40349000

素因数分解:

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

素因数の和:435

約数の個数: 64

約数和(自身を含む): 95387760

約数和(自身を除く): 55038760

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 157, 200, 250, 257, 314, 500, 514, 628, 785, 1000, 1028, 1256, 1285, 1570, 2056, 2570, 3140, 3925, 5140, 6280, 6425, 7850, 10280, 12850, 15700, 19625, 25700, 31400, 32125, 39250, 40349, 51400, 64250, 78500, 80698, 128500, 157000, 161396, 201745, 257000, 322792, 403490, 806980, 1008725, 1613960, 2017450, 4034900, 5043625, 8069800, 10087250, 20174500, 40349000]

約数ペア:

[(1, 40349000), (2, 20174500), (4, 10087250), (5, 8069800), (8, 5043625), (10, 4034900), (20, 2017450), (25, 1613960), (40, 1008725), (50, 806980), (100, 403490), (125, 322792), (157, 257000), (200, 201745), (250, 161396), (257, 157000), (314, 128500), (500, 80698), (514, 78500), (628, 64250), (785, 51400), (1000, 40349), (1028, 39250), (1256, 32125), (1285, 31400), (1570, 25700), (2056, 19625), (2570, 15700), (3140, 12850), (3925, 10280), (5140, 7850), (6280, 6425)]