278435493

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{283}}^1$

素因数の和:423

約数の個数: 72

約数和(自身を含む): 494964288

約数和(自身を除く): 216528795

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 97, 147, 161, 207, 283, 291, 441, 483, 679, 849, 873, 1127, 1449, 1981, 2037, 2231, 2547, 3381, 4753, 5943, 6111, 6509, 6693, 10143, 13867, 14259, 15617, 17829, 19527, 20079, 27451, 41601, 42777, 45563, 46851, 58581, 82353, 109319, 124803, 136689, 140553, 192157, 247059, 318941, 327957, 410067, 576471, 631373, 956823, 983871, 1345099, 1729413, 1894119, 2870469, 4035297, 4419611, 5682357, 12105891, 13258833, 30937277, 39776499, 92811831, 278435493]

約数ペア:

[(1, 278435493), (3, 92811831), (7, 39776499), (9, 30937277), (21, 13258833), (23, 12105891), (49, 5682357), (63, 4419611), (69, 4035297), (97, 2870469), (147, 1894119), (161, 1729413), (207, 1345099), (283, 983871), (291, 956823), (441, 631373), (483, 576471), (679, 410067), (849, 327957), (873, 318941), (1127, 247059), (1449, 192157), (1981, 140553), (2037, 136689), (2231, 124803), (2547, 109319), (3381, 82353), (4753, 58581), (5943, 46851), (6111, 45563), (6509, 42777), (6693, 41601), (10143, 27451), (13867, 20079), (14259, 19527), (15617, 17829)]