7257680

素因数分解:

$2^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{353}}^1$

素因数の和:623

約数の個数: 40

約数和(自身を含む): 16987752

約数和(自身を除く): 9730072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257, 353, 514, 706, 1028, 1285, 1412, 1765, 2056, 2570, 2824, 3530, 4112, 5140, 5648, 7060, 10280, 14120, 20560, 28240, 90721, 181442, 362884, 453605, 725768, 907210, 1451536, 1814420, 3628840, 7257680]

約数ペア:

[(1, 7257680), (2, 3628840), (4, 1814420), (5, 1451536), (8, 907210), (10, 725768), (16, 453605), (20, 362884), (40, 181442), (80, 90721), (257, 28240), (353, 20560), (514, 14120), (706, 10280), (1028, 7060), (1285, 5648), (1412, 5140), (1765, 4112), (2056, 3530), (2570, 2824)]