20784618

素因数分解:

$2^1\times 3^2\times {\mathrm{257}}^1\times {\mathrm{4493}}^1$

素因数の和:4758

約数の個数: 24

約数和(自身を含む): 45218628

約数和(自身を除く): 24434010

約数列:

[1, 2, 3, 6, 9, 18, 257, 514, 771, 1542, 2313, 4493, 4626, 8986, 13479, 26958, 40437, 80874, 1154701, 2309402, 3464103, 6928206, 10392309, 20784618]

約数ペア:

[(1, 20784618), (2, 10392309), (3, 6928206), (6, 3464103), (9, 2309402), (18, 1154701), (257, 80874), (514, 40437), (771, 26958), (1542, 13479), (2313, 8986), (4493, 4626)]