21275778897

素因数分解:

$3^4\times {\mathrm{487}}^1\times {\mathrm{539351}}^1$

素因数の和:539850

約数の個数: 20

約数和(自身を含む): 31847656896

約数和(自身を除く): 10571877999

約数列:

[1, 3, 9, 27, 81, 487, 1461, 4383, 13149, 39447, 539351, 1618053, 4854159, 14562477, 43687431, 262663937, 787991811, 2363975433, 7091926299, 21275778897]

約数ペア:

[(1, 21275778897), (3, 7091926299), (9, 2363975433), (27, 787991811), (81, 262663937), (487, 43687431), (1461, 14562477), (4383, 4854159), (13149, 1618053), (39447, 539351)]