20787009

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{419}}^1\times {\mathrm{719}}^1$

素因数の和:1164

約数の個数: 16

約数和(自身を含む): 29030400

約数和(自身を除く): 8243391

約数列:

[1, 3, 23, 69, 419, 719, 1257, 2157, 9637, 16537, 28911, 49611, 301261, 903783, 6929003, 20787009]

約数ペア:

[(1, 20787009), (3, 6929003), (23, 903783), (69, 301261), (419, 49611), (719, 28911), (1257, 16537), (2157, 9637)]