21148293

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{9887}}^1$

素因数の和:9944

約数の個数: 16

約数和(自身を含む): 30375936

約数和(自身を除く): 9227643

約数列:

[1, 3, 23, 31, 69, 93, 713, 2139, 9887, 29661, 227401, 306497, 682203, 919491, 7049431, 21148293]

約数ペア:

[(1, 21148293), (3, 7049431), (23, 919491), (31, 682203), (69, 306497), (93, 227401), (713, 29661), (2139, 9887)]