81502533

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 147251520

約数和(自身を除く): 65748987

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 71, 133, 137, 147, 171, 213, 399, 411, 441, 497, 639, 931, 959, 1197, 1233, 1349, 1491, 2603, 2793, 2877, 3479, 4047, 4473, 6713, 7809, 8379, 8631, 9443, 9727, 10437, 12141, 18221, 20139, 23427, 28329, 29181, 31311, 54663, 60417, 66101, 68089, 84987, 87543, 127547, 163989, 184813, 198303, 204267, 382641, 476623, 554439, 594909, 612801, 1147923, 1293691, 1429869, 1663317, 3881073, 4289607, 9055837, 11643219, 27167511, 81502533]

約数ペア:

[(1, 81502533), (3, 27167511), (7, 11643219), (9, 9055837), (19, 4289607), (21, 3881073), (49, 1663317), (57, 1429869), (63, 1293691), (71, 1147923), (133, 612801), (137, 594909), (147, 554439), (171, 476623), (213, 382641), (399, 204267), (411, 198303), (441, 184813), (497, 163989), (639, 127547), (931, 87543), (959, 84987), (1197, 68089), (1233, 66101), (1349, 60417), (1491, 54663), (2603, 31311), (2793, 29181), (2877, 28329), (3479, 23427), (4047, 20139), (4473, 18221), (6713, 12141), (7809, 10437), (8379, 9727), (8631, 9443)]