21043737

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 36324288

約数和(自身を除く): 15280551

約数列:

[1, 3, 9, 11, 13, 33, 39, 83, 99, 117, 143, 197, 249, 429, 591, 747, 913, 1079, 1287, 1773, 2167, 2561, 2739, 3237, 6501, 7683, 8217, 9711, 11869, 16351, 19503, 23049, 28171, 35607, 49053, 84513, 106821, 147159, 179861, 212563, 253539, 539583, 637689, 1618749, 1913067, 2338193, 7014579, 21043737]

約数ペア:

[(1, 21043737), (3, 7014579), (9, 2338193), (11, 1913067), (13, 1618749), (33, 637689), (39, 539583), (83, 253539), (99, 212563), (117, 179861), (143, 147159), (197, 106821), (249, 84513), (429, 49053), (591, 35607), (747, 28171), (913, 23049), (1079, 19503), (1287, 16351), (1773, 11869), (2167, 9711), (2561, 8217), (2739, 7683), (3237, 6501)]