217697788

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2729}}^1$

素因数の和:2795

約数の個数: 72

約数和(自身を含む): 496707120

約数和(自身を除く): 279009332

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 37, 44, 49, 74, 77, 98, 148, 154, 196, 259, 308, 407, 518, 539, 814, 1036, 1078, 1628, 1813, 2156, 2729, 2849, 3626, 5458, 5698, 7252, 10916, 11396, 19103, 19943, 30019, 38206, 39886, 60038, 76412, 79772, 100973, 120076, 133721, 201946, 210133, 267442, 403892, 420266, 534884, 706811, 840532, 1110703, 1413622, 1470931, 2221406, 2827244, 2941862, 4442812, 4947677, 5883724, 7774921, 9895354, 15549842, 19790708, 31099684, 54424447, 108848894, 217697788]

約数ペア:

[(1, 217697788), (2, 108848894), (4, 54424447), (7, 31099684), (11, 19790708), (14, 15549842), (22, 9895354), (28, 7774921), (37, 5883724), (44, 4947677), (49, 4442812), (74, 2941862), (77, 2827244), (98, 2221406), (148, 1470931), (154, 1413622), (196, 1110703), (259, 840532), (308, 706811), (407, 534884), (518, 420266), (539, 403892), (814, 267442), (1036, 210133), (1078, 201946), (1628, 133721), (1813, 120076), (2156, 100973), (2729, 79772), (2849, 76412), (3626, 60038), (5458, 39886), (5698, 38206), (7252, 30019), (10916, 19943), (11396, 19103)]