31380939

素因数分解:

$3^4\times {\mathrm{239}}^1\times {\mathrm{1621}}^1$

素因数の和:1872

約数の個数: 20

約数和(自身を含む): 47102880

約数和(自身を除く): 15721941

約数列:

[1, 3, 9, 27, 81, 239, 717, 1621, 2151, 4863, 6453, 14589, 19359, 43767, 131301, 387419, 1162257, 3486771, 10460313, 31380939]

約数ペア:

[(1, 31380939), (3, 10460313), (9, 3486771), (27, 1162257), (81, 387419), (239, 131301), (717, 43767), (1621, 19359), (2151, 14589), (4863, 6453)]