19843285

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 31190400

約数和(自身を除く): 11347115

約数列:

[1, 5, 7, 11, 35, 37, 49, 55, 77, 185, 199, 245, 259, 385, 407, 539, 995, 1295, 1393, 1813, 2035, 2189, 2695, 2849, 6965, 7363, 9065, 9751, 10945, 14245, 15323, 19943, 36815, 48755, 51541, 76615, 80993, 99715, 107261, 257705, 360787, 404965, 536305, 566951, 1803935, 2834755, 3968657, 19843285]

約数ペア:

[(1, 19843285), (5, 3968657), (7, 2834755), (11, 1803935), (35, 566951), (37, 536305), (49, 404965), (55, 360787), (77, 257705), (185, 107261), (199, 99715), (245, 80993), (259, 76615), (385, 51541), (407, 48755), (539, 36815), (995, 19943), (1295, 15323), (1393, 14245), (1813, 10945), (2035, 9751), (2189, 9065), (2695, 7363), (2849, 6965)]