818388369

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{223}}^1\times {\mathrm{17729}}^1$

素因数の和:17981

約数の個数: 24

約数和(自身を含む): 1239114240

約数和(自身を除く): 420725871

約数列:

[1, 3, 9, 23, 69, 207, 223, 669, 2007, 5129, 15387, 17729, 46161, 53187, 159561, 407767, 1223301, 3669903, 3953567, 11860701, 35582103, 90932041, 272796123, 818388369]

約数ペア:

[(1, 818388369), (3, 272796123), (9, 90932041), (23, 35582103), (69, 11860701), (207, 3953567), (223, 3669903), (669, 1223301), (2007, 407767), (5129, 159561), (15387, 53187), (17729, 46161)]