71723211

素因数分解:

$3^1\times 7^2\times {\mathrm{397}}^1\times {\mathrm{1229}}^1$

素因数の和:1643

約数の個数: 24

約数和(自身を含む): 111615120

約数和(自身を除く): 39891909

約数列:

[1, 3, 7, 21, 49, 147, 397, 1191, 1229, 2779, 3687, 8337, 8603, 19453, 25809, 58359, 60221, 180663, 487913, 1463739, 3415391, 10246173, 23907737, 71723211]

約数ペア:

[(1, 71723211), (3, 23907737), (7, 10246173), (21, 3415391), (49, 1463739), (147, 487913), (397, 180663), (1191, 60221), (1229, 58359), (2779, 25809), (3687, 19453), (8337, 8603)]