12557020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{349}}^1$

素因数の和:622

約数の個数: 48

約数和(自身を含む): 30340800

約数和(自身を除く): 17783780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 349, 514, 698, 1028, 1285, 1396, 1745, 1799, 2443, 2570, 3490, 3598, 4886, 5140, 6980, 7196, 8995, 9772, 12215, 17990, 24430, 35980, 48860, 89693, 179386, 358772, 448465, 627851, 896930, 1255702, 1793860, 2511404, 3139255, 6278510, 12557020]

約数ペア:

[(1, 12557020), (2, 6278510), (4, 3139255), (5, 2511404), (7, 1793860), (10, 1255702), (14, 896930), (20, 627851), (28, 448465), (35, 358772), (70, 179386), (140, 89693), (257, 48860), (349, 35980), (514, 24430), (698, 17990), (1028, 12215), (1285, 9772), (1396, 8995), (1745, 7196), (1799, 6980), (2443, 5140), (2570, 4886), (3490, 3598)]