21745971

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{8081}}^1$

素因数の和:8123

約数の個数: 24

約数和(自身を含む): 35302176

約数和(自身を除く): 13556205

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 8081, 24243, 72729, 105053, 185863, 315159, 557589, 945477, 1672767, 2416219, 7248657, 21745971]

約数ペア:

[(1, 21745971), (3, 7248657), (9, 2416219), (13, 1672767), (23, 945477), (39, 557589), (69, 315159), (117, 185863), (207, 105053), (299, 72729), (897, 24243), (2691, 8081)]