21000339

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{967}}^1$

素因数の和:1119

約数の個数: 24

約数和(自身を含む): 32215040

約数和(自身を除く): 11214701

約数列:

[1, 3, 9, 19, 57, 127, 171, 381, 967, 1143, 2413, 2901, 7239, 8703, 18373, 21717, 55119, 122809, 165357, 368427, 1105281, 2333371, 7000113, 21000339]

約数ペア:

[(1, 21000339), (3, 7000113), (9, 2333371), (19, 1105281), (57, 368427), (127, 165357), (171, 122809), (381, 55119), (967, 21717), (1143, 18373), (2413, 8703), (2901, 7239)]