20789217

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{11159}}^1$

素因数の和:11194

約数の個数: 20

約数和(自身を含む): 32408640

約数和(自身を除く): 11619423

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 11159, 33477, 100431, 256657, 301293, 769971, 903879, 2309913, 6929739, 20789217]

約数ペア:

[(1, 20789217), (3, 6929739), (9, 2309913), (23, 903879), (27, 769971), (69, 301293), (81, 256657), (207, 100431), (621, 33477), (1863, 11159)]