21151653

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1\times {\mathrm{503}}^1$

素因数の和:744

約数の個数: 16

約数和(自身を含む): 28740096

約数和(自身を除く): 7588443

約数列:

[1, 3, 107, 131, 321, 393, 503, 1509, 14017, 42051, 53821, 65893, 161463, 197679, 7050551, 21151653]

約数ペア:

[(1, 21151653), (3, 7050551), (107, 197679), (131, 161463), (321, 65893), (393, 53821), (503, 42051), (1509, 14017)]