19660823

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 6466537

約数列:

[1, 7, 13, 17, 71, 91, 119, 179, 221, 497, 923, 1207, 1253, 1547, 2327, 3043, 6461, 8449, 12709, 15691, 16289, 21301, 39559, 88963, 109837, 165217, 216053, 276913, 1156519, 1512371, 2808689, 19660823]

約数ペア:

[(1, 19660823), (7, 2808689), (13, 1512371), (17, 1156519), (71, 276913), (91, 216053), (119, 165217), (179, 109837), (221, 88963), (497, 39559), (923, 21301), (1207, 16289), (1253, 15691), (1547, 12709), (2327, 8449), (3043, 6461)]