21036951

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{13831}}^1$

素因数の和:13863

約数の個数: 18

約数和(自身を含む): 32906328

約数和(自身を除く): 11869377

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 13831, 41493, 124479, 179803, 539409, 1618227, 2337439, 7012317, 21036951]

約数ペア:

[(1, 21036951), (3, 7012317), (9, 2337439), (13, 1618227), (39, 539409), (117, 179803), (169, 124479), (507, 41493), (1521, 13831)]