28085876

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:205

約数の個数: 96

約数和(自身を含む): 66232320

約数和(自身を除く): 38146444

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 31, 38, 52, 62, 76, 91, 124, 131, 133, 182, 217, 247, 262, 266, 364, 403, 434, 494, 524, 532, 589, 806, 868, 917, 988, 1178, 1612, 1703, 1729, 1834, 2356, 2489, 2821, 3406, 3458, 3668, 4061, 4123, 4978, 5642, 6812, 6916, 7657, 8122, 8246, 9956, 11284, 11921, 15314, 16244, 16492, 17423, 23842, 28427, 30628, 32357, 34846, 47684, 52793, 53599, 56854, 64714, 69692, 77159, 105586, 107198, 113708, 129428, 154318, 211172, 214396, 226499, 308636, 369551, 452998, 540113, 739102, 905996, 1003067, 1080226, 1478204, 2006134, 2160452, 4012268, 7021469, 14042938, 28085876]

約数ペア:

[(1, 28085876), (2, 14042938), (4, 7021469), (7, 4012268), (13, 2160452), (14, 2006134), (19, 1478204), (26, 1080226), (28, 1003067), (31, 905996), (38, 739102), (52, 540113), (62, 452998), (76, 369551), (91, 308636), (124, 226499), (131, 214396), (133, 211172), (182, 154318), (217, 129428), (247, 113708), (262, 107198), (266, 105586), (364, 77159), (403, 69692), (434, 64714), (494, 56854), (524, 53599), (532, 52793), (589, 47684), (806, 34846), (868, 32357), (917, 30628), (988, 28427), (1178, 23842), (1612, 17423), (1703, 16492), (1729, 16244), (1834, 15314), (2356, 11921), (2489, 11284), (2821, 9956), (3406, 8246), (3458, 8122), (3668, 7657), (4061, 6916), (4123, 6812), (4978, 5642)]