21001563

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{307}}^1\times {\mathrm{691}}^1$

素因数の和:1015

約数の個数: 24

約数和(自身を含む): 33249216

約数和(自身を除く): 12247653

約数列:

[1, 3, 9, 11, 33, 99, 307, 691, 921, 2073, 2763, 3377, 6219, 7601, 10131, 22803, 30393, 68409, 212137, 636411, 1909233, 2333507, 7000521, 21001563]

約数ペア:

[(1, 21001563), (3, 7000521), (9, 2333507), (11, 1909233), (33, 636411), (99, 212137), (307, 68409), (691, 30393), (921, 22803), (2073, 10131), (2763, 7601), (3377, 6219)]