21664377

素因数分解:

$3^2\times 7^1\times {\mathrm{367}}^1\times {\mathrm{937}}^1$

素因数の和:1317

約数の個数: 24

約数和(自身を含む): 35899136

約数和(自身を除く): 14234759

約数列:

[1, 3, 7, 9, 21, 63, 367, 937, 1101, 2569, 2811, 3303, 6559, 7707, 8433, 19677, 23121, 59031, 343879, 1031637, 2407153, 3094911, 7221459, 21664377]

約数ペア:

[(1, 21664377), (3, 7221459), (7, 3094911), (9, 2407153), (21, 1031637), (63, 343879), (367, 59031), (937, 23121), (1101, 19677), (2569, 8433), (2811, 7707), (3303, 6559)]