19571409

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:207

約数の個数: 64

約数和(自身を含む): 35239680

約数和(自身を除く): 15668271

約数列:

[1, 3, 9, 11, 13, 27, 33, 37, 39, 99, 111, 117, 137, 143, 297, 333, 351, 407, 411, 429, 481, 999, 1221, 1233, 1287, 1443, 1507, 1781, 3663, 3699, 3861, 4329, 4521, 5069, 5291, 5343, 10989, 12987, 13563, 15207, 15873, 16029, 19591, 40689, 45621, 47619, 48087, 55759, 58773, 65897, 136863, 142857, 167277, 176319, 197691, 501831, 528957, 593073, 724867, 1505493, 1779219, 2174601, 6523803, 19571409]

約数ペア:

[(1, 19571409), (3, 6523803), (9, 2174601), (11, 1779219), (13, 1505493), (27, 724867), (33, 593073), (37, 528957), (39, 501831), (99, 197691), (111, 176319), (117, 167277), (137, 142857), (143, 136863), (297, 65897), (333, 58773), (351, 55759), (407, 48087), (411, 47619), (429, 45621), (481, 40689), (999, 19591), (1221, 16029), (1233, 15873), (1287, 15207), (1443, 13563), (1507, 12987), (1781, 10989), (3663, 5343), (3699, 5291), (3861, 5069), (4329, 4521)]