21401331

素因数分解:

$3^1\times 7^1\times {\mathrm{353}}^1\times {\mathrm{2887}}^1$

素因数の和:3250

約数の個数: 16

約数和(自身を含む): 32715264

約数和(自身を除く): 11313933

約数列:

[1, 3, 7, 21, 353, 1059, 2471, 2887, 7413, 8661, 20209, 60627, 1019111, 3057333, 7133777, 21401331]

約数ペア:

[(1, 21401331), (3, 7133777), (7, 3057333), (21, 1019111), (353, 60627), (1059, 20209), (2471, 8661), (2887, 7413)]