21285231

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{191}}^1\times {\mathrm{307}}^1$

素因数の和:523

約数の個数: 24

約数和(自身を含む): 31460352

約数和(自身を除く): 10175121

約数列:

[1, 3, 11, 33, 121, 191, 307, 363, 573, 921, 2101, 3377, 6303, 10131, 23111, 37147, 58637, 69333, 111441, 175911, 645007, 1935021, 7095077, 21285231]

約数ペア:

[(1, 21285231), (3, 7095077), (11, 1935021), (33, 645007), (121, 175911), (191, 111441), (307, 69333), (363, 58637), (573, 37147), (921, 23111), (2101, 10131), (3377, 6303)]