20780019

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1831}}^1$

素因数の和:1947

約数の個数: 24

約数和(自身を含む): 32675552

約数和(自身を除く): 11895533

約数列:

[1, 3, 9, 13, 39, 97, 117, 291, 873, 1261, 1831, 3783, 5493, 11349, 16479, 23803, 71409, 177607, 214227, 532821, 1598463, 2308891, 6926673, 20780019]

約数ペア:

[(1, 20780019), (3, 6926673), (9, 2308891), (13, 1598463), (39, 532821), (97, 214227), (117, 177607), (291, 71409), (873, 23803), (1261, 16479), (1831, 11349), (3783, 5493)]