20215402557

素因数分解:

$3^1\times 7^1\times {\mathrm{1777}}^1\times {\mathrm{541721}}^1$

素因数の和:543508

約数の個数: 16

約数和(自身を含む): 30821814912

約数和(自身を除く): 10606412355

約数列:

[1, 3, 7, 21, 1777, 5331, 12439, 37317, 541721, 1625163, 3792047, 11376141, 962638217, 2887914651, 6738467519, 20215402557]

約数ペア:

[(1, 20215402557), (3, 6738467519), (7, 2887914651), (21, 962638217), (1777, 11376141), (5331, 3792047), (12439, 1625163), (37317, 541721)]