261666027

素因数分解:

$3^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 456479712

約数和(自身を除く): 194813685

約数列:

[1, 3, 7, 9, 21, 49, 61, 63, 71, 137, 147, 183, 213, 411, 427, 441, 497, 549, 639, 959, 1233, 1281, 1491, 2877, 2989, 3479, 3843, 4331, 4473, 6713, 8357, 8631, 8967, 9727, 10437, 12993, 20139, 25071, 26901, 29181, 30317, 31311, 38979, 58499, 60417, 68089, 75213, 87543, 90951, 175497, 204267, 212219, 272853, 409493, 476623, 526491, 593347, 612801, 636657, 1228479, 1429869, 1780041, 1909971, 3685437, 4153429, 4289607, 5340123, 12460287, 29074003, 37380861, 87222009, 261666027]

約数ペア:

[(1, 261666027), (3, 87222009), (7, 37380861), (9, 29074003), (21, 12460287), (49, 5340123), (61, 4289607), (63, 4153429), (71, 3685437), (137, 1909971), (147, 1780041), (183, 1429869), (213, 1228479), (411, 636657), (427, 612801), (441, 593347), (497, 526491), (549, 476623), (639, 409493), (959, 272853), (1233, 212219), (1281, 204267), (1491, 175497), (2877, 90951), (2989, 87543), (3479, 75213), (3843, 68089), (4331, 60417), (4473, 58499), (6713, 38979), (8357, 31311), (8631, 30317), (8967, 29181), (9727, 26901), (10437, 25071), (12993, 20139)]