21609987

素因数分解:

$3^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{4877}}^1$

素因数の和:5098

約数の個数: 16

約数和(自身を含む): 33092352

約数和(自身を除く): 11482365

約数列:

[1, 3, 7, 21, 211, 633, 1477, 4431, 4877, 14631, 34139, 102417, 1029047, 3087141, 7203329, 21609987]

約数ペア:

[(1, 21609987), (3, 7203329), (7, 3087141), (21, 1029047), (211, 102417), (633, 34139), (1477, 14631), (4431, 4877)]