21893613

素因数分解:

$3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{6997}}^1$

素因数の和:7156

約数の個数: 16

約数和(自身を含む): 33590400

約数和(自身を除く): 11696787

約数列:

[1, 3, 7, 21, 149, 447, 1043, 3129, 6997, 20991, 48979, 146937, 1042553, 3127659, 7297871, 21893613]

約数ペア:

[(1, 21893613), (3, 7297871), (7, 3127659), (21, 1042553), (149, 146937), (447, 48979), (1043, 20991), (3129, 6997)]