21180782

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79627}}^1$

素因数の和:79655

約数の個数: 16

約数和(自身を含む): 38221440

約数和(自身を除く): 17040658

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 79627, 159254, 557389, 1114778, 1512913, 3025826, 10590391, 21180782]

約数ペア:

[(1, 21180782), (2, 10590391), (7, 3025826), (14, 1512913), (19, 1114778), (38, 557389), (133, 159254), (266, 79627)]