20778982

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1373}}^1$

素因数の和:1452

約数の個数: 32

約数和(自身を含む): 37988352

約数和(自身を除く): 17209370

約数列:

[1, 2, 7, 14, 23, 46, 47, 94, 161, 322, 329, 658, 1081, 1373, 2162, 2746, 7567, 9611, 15134, 19222, 31579, 63158, 64531, 129062, 221053, 442106, 451717, 903434, 1484213, 2968426, 10389491, 20778982]

約数ペア:

[(1, 20778982), (2, 10389491), (7, 2968426), (14, 1484213), (23, 903434), (46, 451717), (47, 442106), (94, 221053), (161, 129062), (322, 64531), (329, 63158), (658, 31579), (1081, 19222), (1373, 15134), (2162, 9611), (2746, 7567)]