21797391

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{743}}^1$

素因数の和:891

約数の個数: 32

約数和(自身を含む): 36569088

約数和(自身を除く): 14771697

約数列:

[1, 3, 7, 11, 21, 33, 77, 127, 231, 381, 743, 889, 1397, 2229, 2667, 4191, 5201, 8173, 9779, 15603, 24519, 29337, 57211, 94361, 171633, 283083, 660527, 1037971, 1981581, 3113913, 7265797, 21797391]

約数ペア:

[(1, 21797391), (3, 7265797), (7, 3113913), (11, 1981581), (21, 1037971), (33, 660527), (77, 283083), (127, 171633), (231, 94361), (381, 57211), (743, 29337), (889, 24519), (1397, 15603), (2229, 9779), (2667, 8173), (4191, 5201)]