12700940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{353}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 30687552

約数和(自身を除く): 17986612

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 353, 514, 706, 1028, 1285, 1412, 1765, 1799, 2471, 2570, 3530, 3598, 4942, 5140, 7060, 7196, 8995, 9884, 12355, 17990, 24710, 35980, 49420, 90721, 181442, 362884, 453605, 635047, 907210, 1270094, 1814420, 2540188, 3175235, 6350470, 12700940]

約数ペア:

[(1, 12700940), (2, 6350470), (4, 3175235), (5, 2540188), (7, 1814420), (10, 1270094), (14, 907210), (20, 635047), (28, 453605), (35, 362884), (70, 181442), (140, 90721), (257, 49420), (353, 35980), (514, 24710), (706, 17990), (1028, 12355), (1285, 9884), (1412, 8995), (1765, 7196), (1799, 7060), (2471, 5140), (2570, 4942), (3530, 3598)]