21029500

素因数分解:

$2^2\times 5^3\times {\mathrm{137}}^1\times {\mathrm{307}}^1$

素因数の和:463

約数の個数: 48

約数和(自身を含む): 46414368

約数和(自身を除く): 25384868

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 137, 250, 274, 307, 500, 548, 614, 685, 1228, 1370, 1535, 2740, 3070, 3425, 6140, 6850, 7675, 13700, 15350, 17125, 30700, 34250, 38375, 42059, 68500, 76750, 84118, 153500, 168236, 210295, 420590, 841180, 1051475, 2102950, 4205900, 5257375, 10514750, 21029500]

約数ペア:

[(1, 21029500), (2, 10514750), (4, 5257375), (5, 4205900), (10, 2102950), (20, 1051475), (25, 841180), (50, 420590), (100, 210295), (125, 168236), (137, 153500), (250, 84118), (274, 76750), (307, 68500), (500, 42059), (548, 38375), (614, 34250), (685, 30700), (1228, 17125), (1370, 15350), (1535, 13700), (2740, 7675), (3070, 6850), (3425, 6140)]