20859729

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 11073711

約数列:

[1, 3, 11, 29, 33, 71, 87, 213, 307, 319, 781, 921, 957, 2059, 2343, 3377, 6177, 8903, 10131, 21797, 22649, 26709, 65391, 67947, 97933, 239767, 293799, 632113, 719301, 1896339, 6953243, 20859729]

約数ペア:

[(1, 20859729), (3, 6953243), (11, 1896339), (29, 719301), (33, 632113), (71, 293799), (87, 239767), (213, 97933), (307, 67947), (319, 65391), (781, 26709), (921, 22649), (957, 21797), (2059, 10131), (2343, 8903), (3377, 6177)]