20213817

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{1237}}^1$

素因数の和:1672

約数の個数: 16

約数和(自身を含む): 29117760

約数和(自身を除く): 8903943

約数列:

[1, 3, 13, 39, 419, 1237, 1257, 3711, 5447, 16081, 16341, 48243, 518303, 1554909, 6737939, 20213817]

約数ペア:

[(1, 20213817), (3, 6737939), (13, 1554909), (39, 518303), (419, 48243), (1237, 16341), (1257, 16081), (3711, 5447)]