21554247

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1069}}^1$

素因数の和:1143

約数の個数: 32

約数和(自身を含む): 34513920

約数和(自身を除く): 12959673

約数列:

[1, 3, 11, 13, 33, 39, 47, 141, 143, 429, 517, 611, 1069, 1551, 1833, 3207, 6721, 11759, 13897, 20163, 35277, 41691, 50243, 150729, 152867, 458601, 552673, 653159, 1658019, 1959477, 7184749, 21554247]

約数ペア:

[(1, 21554247), (3, 7184749), (11, 1959477), (13, 1658019), (33, 653159), (39, 552673), (47, 458601), (141, 152867), (143, 150729), (429, 50243), (517, 41691), (611, 35277), (1069, 20163), (1551, 13897), (1833, 11759), (3207, 6721)]