21212151

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{563}}^1\times {\mathrm{661}}^1$

素因数の和:1246

約数の個数: 16

約数和(自身を含む): 29869440

約数和(自身を除く): 8657289

約数列:

[1, 3, 19, 57, 563, 661, 1689, 1983, 10697, 12559, 32091, 37677, 372143, 1116429, 7070717, 21212151]

約数ペア:

[(1, 21212151), (3, 7070717), (19, 1116429), (57, 372143), (563, 37677), (661, 32091), (1689, 12559), (1983, 10697)]