21489765

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{130241}}^1$

素因数の和:130260

約数の個数: 16

約数和(自身を含む): 37509696

約数和(自身を除く): 16019931

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 130241, 390723, 651205, 1432651, 1953615, 4297953, 7163255, 21489765]

約数ペア:

[(1, 21489765), (3, 7163255), (5, 4297953), (11, 1953615), (15, 1432651), (33, 651205), (55, 390723), (165, 130241)]