208528173

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{607}}^1$

素因数の和:687

約数の個数: 72

約数和(自身を含む): 378443520

約数和(自身を除く): 169915347

約数列:

[1, 3, 7, 9, 19, 21, 41, 49, 57, 63, 123, 133, 147, 171, 287, 369, 399, 441, 607, 779, 861, 931, 1197, 1821, 2009, 2337, 2583, 2793, 4249, 5453, 5463, 6027, 7011, 8379, 11533, 12747, 16359, 18081, 24887, 29743, 34599, 38171, 38241, 49077, 74661, 80731, 89229, 103797, 114513, 174209, 223983, 242193, 267687, 343539, 472853, 522627, 565117, 726579, 1219463, 1418559, 1567881, 1695351, 3309971, 3658389, 4255677, 5086053, 9929913, 10975167, 23169797, 29789739, 69509391, 208528173]

約数ペア:

[(1, 208528173), (3, 69509391), (7, 29789739), (9, 23169797), (19, 10975167), (21, 9929913), (41, 5086053), (49, 4255677), (57, 3658389), (63, 3309971), (123, 1695351), (133, 1567881), (147, 1418559), (171, 1219463), (287, 726579), (369, 565117), (399, 522627), (441, 472853), (607, 343539), (779, 267687), (861, 242193), (931, 223983), (1197, 174209), (1821, 114513), (2009, 103797), (2337, 89229), (2583, 80731), (2793, 74661), (4249, 49077), (5453, 38241), (5463, 38171), (6027, 34599), (7011, 29743), (8379, 24887), (11533, 18081), (12747, 16359)]