21346821

素因数分解:

$3^5\times {\mathrm{107}}^1\times {\mathrm{821}}^1$

素因数の和:943

約数の個数: 24

約数和(自身を含む): 32314464

約数和(自身を除く): 10967643

約数列:

[1, 3, 9, 27, 81, 107, 243, 321, 821, 963, 2463, 2889, 7389, 8667, 22167, 26001, 66501, 87847, 199503, 263541, 790623, 2371869, 7115607, 21346821]

約数ペア:

[(1, 21346821), (3, 7115607), (9, 2371869), (27, 790623), (81, 263541), (107, 199503), (243, 87847), (321, 66501), (821, 26001), (963, 22167), (2463, 8667), (2889, 7389)]