21080073

素因数分解:

$3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{6737}}^1$

素因数の和:6896

約数の個数: 16

約数和(自身を含む): 32342400

約数和(自身を除く): 11262327

約数列:

[1, 3, 7, 21, 149, 447, 1043, 3129, 6737, 20211, 47159, 141477, 1003813, 3011439, 7026691, 21080073]

約数ペア:

[(1, 21080073), (3, 7026691), (7, 3011439), (21, 1003813), (149, 141477), (447, 47159), (1043, 20211), (3129, 6737)]