21745827

素因数分解:

$3^5\times {\mathrm{109}}^1\times {\mathrm{821}}^1$

素因数の和:945

約数の個数: 24

約数和(自身を含む): 32912880

約数和(自身を除く): 11167053

約数列:

[1, 3, 9, 27, 81, 109, 243, 327, 821, 981, 2463, 2943, 7389, 8829, 22167, 26487, 66501, 89489, 199503, 268467, 805401, 2416203, 7248609, 21745827]

約数ペア:

[(1, 21745827), (3, 7248609), (9, 2416203), (27, 805401), (81, 268467), (109, 199503), (243, 89489), (327, 66501), (821, 26487), (981, 22167), (2463, 8829), (2943, 7389)]