21686913

素因数分解:

$3^3\times {\mathrm{73}}^1\times {\mathrm{11003}}^1$

素因数の和:11085

約数の個数: 16

約数和(自身を含む): 32571840

約数和(自身を除く): 10884927

約数列:

[1, 3, 9, 27, 73, 219, 657, 1971, 11003, 33009, 99027, 297081, 803219, 2409657, 7228971, 21686913]

約数ペア:

[(1, 21686913), (3, 7228971), (9, 2409657), (27, 803219), (73, 297081), (219, 99027), (657, 33009), (1971, 11003)]