20050407

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{419}}^1$

素因数の和:847

約数の個数: 24

約数和(自身を含む): 31340400

約数和(自身を除く): 11289993

約数列:

[1, 3, 9, 13, 39, 117, 409, 419, 1227, 1257, 3681, 3771, 5317, 5447, 15951, 16341, 47853, 49023, 171371, 514113, 1542339, 2227823, 6683469, 20050407]

約数ペア:

[(1, 20050407), (3, 6683469), (9, 2227823), (13, 1542339), (39, 514113), (117, 171371), (409, 49023), (419, 47853), (1227, 16341), (1257, 15951), (3681, 5447), (3771, 5317)]