20466957

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 33685632

約数和(自身を除く): 13218675

約数列:

[1, 3, 7, 21, 37, 49, 53, 71, 111, 147, 159, 213, 259, 371, 497, 777, 1113, 1491, 1813, 1961, 2597, 2627, 3479, 3763, 5439, 5883, 7791, 7881, 10437, 11289, 13727, 18389, 26341, 41181, 55167, 79023, 96089, 128723, 139231, 184387, 288267, 386169, 417693, 553161, 974617, 2923851, 6822319, 20466957]

約数ペア:

[(1, 20466957), (3, 6822319), (7, 2923851), (21, 974617), (37, 553161), (49, 417693), (53, 386169), (71, 288267), (111, 184387), (147, 139231), (159, 128723), (213, 96089), (259, 79023), (371, 55167), (497, 41181), (777, 26341), (1113, 18389), (1491, 13727), (1813, 11289), (1961, 10437), (2597, 7881), (2627, 7791), (3479, 5883), (3763, 5439)]