21284547

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{1087}}^1$

素因数の和:1258

約数の個数: 16

約数和(自身を含む): 29140992

約数和(自身を除く): 7856445

約数列:

[1, 3, 61, 107, 183, 321, 1087, 3261, 6527, 19581, 66307, 116309, 198921, 348927, 7094849, 21284547]

約数ペア:

[(1, 21284547), (3, 7094849), (61, 348927), (107, 198921), (183, 116309), (321, 66307), (1087, 19581), (3261, 6527)]