21493437

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{1217}}^1$

素因数の和:1285

約数の個数: 24

約数和(自身を含む): 33948096

約数和(自身を除く): 12454659

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 841, 1217, 2523, 3651, 5887, 8519, 17661, 25557, 35293, 105879, 247051, 741153, 1023497, 3070491, 7164479, 21493437]

約数ペア:

[(1, 21493437), (3, 7164479), (7, 3070491), (21, 1023497), (29, 741153), (87, 247051), (203, 105879), (609, 35293), (841, 25557), (1217, 17661), (2523, 8519), (3651, 5887)]