128809278

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1973}}^1$

素因数の和:2031

約数の個数: 80

約数和(自身を含む): 321019776

約数和(自身を除く): 192210498

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 31, 39, 54, 62, 78, 81, 93, 117, 162, 186, 234, 279, 351, 403, 558, 702, 806, 837, 1053, 1209, 1674, 1973, 2106, 2418, 2511, 3627, 3946, 5022, 5919, 7254, 10881, 11838, 17757, 21762, 25649, 32643, 35514, 51298, 53271, 61163, 65286, 76947, 106542, 122326, 153894, 159813, 183489, 230841, 319626, 366978, 461682, 550467, 692523, 795119, 1100934, 1385046, 1590238, 1651401, 2077569, 2385357, 3302802, 4155138, 4770714, 4954203, 7156071, 9908406, 14312142, 21468213, 42936426, 64404639, 128809278]

約数ペア:

[(1, 128809278), (2, 64404639), (3, 42936426), (6, 21468213), (9, 14312142), (13, 9908406), (18, 7156071), (26, 4954203), (27, 4770714), (31, 4155138), (39, 3302802), (54, 2385357), (62, 2077569), (78, 1651401), (81, 1590238), (93, 1385046), (117, 1100934), (162, 795119), (186, 692523), (234, 550467), (279, 461682), (351, 366978), (403, 319626), (558, 230841), (702, 183489), (806, 159813), (837, 153894), (1053, 122326), (1209, 106542), (1674, 76947), (1973, 65286), (2106, 61163), (2418, 53271), (2511, 51298), (3627, 35514), (3946, 32643), (5022, 25649), (5919, 21762), (7254, 17757), (10881, 11838)]