228921

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{991}}^1$

素因数の和:1012

約数の個数: 16

約数和(自身を含む): 380928

約数和(自身を除く): 152007

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 991, 2973, 6937, 10901, 20811, 32703, 76307, 228921]

約数ペア:

[(1, 228921), (3, 76307), (7, 32703), (11, 20811), (21, 10901), (33, 6937), (77, 2973), (231, 991)]