19472409

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{17881}}^1$

素因数の和:17909

約数の個数: 18

約数和(自身を含む): 30917978

約数和(自身を除く): 11445569

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 17881, 53643, 160929, 196691, 590073, 1770219, 2163601, 6490803, 19472409]

約数ペア:

[(1, 19472409), (3, 6490803), (9, 2163601), (11, 1770219), (33, 590073), (99, 196691), (121, 160929), (363, 53643), (1089, 17881)]