21317379

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1\times {\mathrm{643}}^1$

素因数の和:946

約数の個数: 16

約数和(自身を含む): 29242752

約数和(自身を除く): 7925373

約数列:

[1, 3, 43, 129, 257, 643, 771, 1929, 11051, 27649, 33153, 82947, 165251, 495753, 7105793, 21317379]

約数ペア:

[(1, 21317379), (3, 7105793), (43, 495753), (129, 165251), (257, 82947), (643, 33153), (771, 27649), (1929, 11051)]