28531377

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2087}}^1$

素因数の和:2138

約数の個数: 36

約数和(自身を含む): 49510656

約数和(自身を除く): 20979279

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 217, 279, 441, 651, 1519, 1953, 2087, 4557, 6261, 13671, 14609, 18783, 43827, 64697, 102263, 131481, 194091, 306789, 452879, 582273, 920367, 1358637, 3170153, 4075911, 9510459, 28531377]

約数ペア:

[(1, 28531377), (3, 9510459), (7, 4075911), (9, 3170153), (21, 1358637), (31, 920367), (49, 582273), (63, 452879), (93, 306789), (147, 194091), (217, 131481), (279, 102263), (441, 64697), (651, 43827), (1519, 18783), (1953, 14609), (2087, 13671), (4557, 6261)]