20178390855

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{15787}}^1$

素因数の和:15893

約数の個数: 96

約数和(自身を含む): 39394722816

約数和(自身を除く): 19216331961

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 47, 49, 105, 111, 141, 147, 185, 235, 245, 259, 329, 555, 705, 735, 777, 987, 1295, 1645, 1739, 1813, 2303, 3885, 4935, 5217, 5439, 6909, 8695, 9065, 11515, 12173, 15787, 26085, 27195, 34545, 36519, 47361, 60865, 78935, 85211, 110509, 182595, 236805, 255633, 331527, 426055, 552545, 584119, 741989, 773563, 1278165, 1657635, 1752357, 2225967, 2320689, 2920595, 3709945, 3867815, 4088833, 5193923, 8761785, 11129835, 11603445, 12266499, 15581769, 20444165, 25969615, 27453593, 28621831, 36357461, 61332495, 77908845, 82360779, 85865493, 109072383, 137267965, 143109155, 181787305, 192175151, 411803895, 429327465, 545361915, 576525453, 960875755, 1345226057, 2882627265, 4035678171, 6726130285, 20178390855]

約数ペア:

[(1, 20178390855), (3, 6726130285), (5, 4035678171), (7, 2882627265), (15, 1345226057), (21, 960875755), (35, 576525453), (37, 545361915), (47, 429327465), (49, 411803895), (105, 192175151), (111, 181787305), (141, 143109155), (147, 137267965), (185, 109072383), (235, 85865493), (245, 82360779), (259, 77908845), (329, 61332495), (555, 36357461), (705, 28621831), (735, 27453593), (777, 25969615), (987, 20444165), (1295, 15581769), (1645, 12266499), (1739, 11603445), (1813, 11129835), (2303, 8761785), (3885, 5193923), (4935, 4088833), (5217, 3867815), (5439, 3709945), (6909, 2920595), (8695, 2320689), (9065, 2225967), (11515, 1752357), (12173, 1657635), (15787, 1278165), (26085, 773563), (27195, 741989), (34545, 584119), (36519, 552545), (47361, 426055), (60865, 331527), (78935, 255633), (85211, 236805), (110509, 182595)]