87139520

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20947}}^1$

素因数の和:20977

約数の個数: 56

約数和(自身を含む): 223473264

約数和(自身を除く): 136333744

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 20947, 41894, 83788, 104735, 167576, 209470, 272311, 335152, 418940, 544622, 670304, 837880, 1089244, 1340608, 1361555, 1675760, 2178488, 2723110, 3351520, 4356976, 5446220, 6703040, 8713952, 10892440, 17427904, 21784880, 43569760, 87139520]

約数ペア:

[(1, 87139520), (2, 43569760), (4, 21784880), (5, 17427904), (8, 10892440), (10, 8713952), (13, 6703040), (16, 5446220), (20, 4356976), (26, 3351520), (32, 2723110), (40, 2178488), (52, 1675760), (64, 1361555), (65, 1340608), (80, 1089244), (104, 837880), (130, 670304), (160, 544622), (208, 418940), (260, 335152), (320, 272311), (416, 209470), (520, 167576), (832, 104735), (1040, 83788), (2080, 41894), (4160, 20947)]