21606921

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{5813}}^1$

素因数の和:5885

約数の個数: 24

約数和(自身を含む): 36279360

約数和(自身を除く): 14672439

約数列:

[1, 3, 7, 9, 21, 59, 63, 177, 413, 531, 1239, 3717, 5813, 17439, 40691, 52317, 122073, 342967, 366219, 1028901, 2400769, 3086703, 7202307, 21606921]

約数ペア:

[(1, 21606921), (3, 7202307), (7, 3086703), (9, 2400769), (21, 1028901), (59, 366219), (63, 342967), (177, 122073), (413, 52317), (531, 40691), (1239, 17439), (3717, 5813)]