28138221

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2789}}^1$

素因数の和:2873

約数の個数: 24

約数和(自身を含む): 43524000

約数和(自身を除く): 15385779

約数列:

[1, 3, 9, 19, 57, 59, 171, 177, 531, 1121, 2789, 3363, 8367, 10089, 25101, 52991, 158973, 164551, 476919, 493653, 1480959, 3126469, 9379407, 28138221]

約数ペア:

[(1, 28138221), (3, 9379407), (9, 3126469), (19, 1480959), (57, 493653), (59, 476919), (171, 164551), (177, 158973), (531, 52991), (1121, 25101), (2789, 10089), (3363, 8367)]