20345492811

素因数分解:

$3^1\times 7^2\times {\mathrm{138404713}}^1$

素因数の和:138404730

約数の個数: 12

約数和(自身を含む): 31556274792

約数和(自身を除く): 11210781981

約数列:

[1, 3, 7, 21, 49, 147, 138404713, 415214139, 968832991, 2906498973, 6781830937, 20345492811]

約数ペア:

[(1, 20345492811), (3, 6781830937), (7, 2906498973), (21, 968832991), (49, 415214139), (147, 138404713)]