21098231

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{163}}^1$

素因数の和:263

約数の個数: 24

約数和(自身を含む): 27126912

約数和(自身を除く): 6028681

約数列:

[1, 7, 11, 41, 77, 163, 287, 451, 1141, 1681, 1793, 3157, 6683, 11767, 12551, 18491, 46781, 73513, 129437, 274003, 514591, 1918021, 3014033, 21098231]

約数ペア:

[(1, 21098231), (7, 3014033), (11, 1918021), (41, 514591), (77, 274003), (163, 129437), (287, 73513), (451, 46781), (1141, 18491), (1681, 12551), (1793, 11767), (3157, 6683)]