21455731

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{409}}^1$

素因数の和:690

約数の個数: 16

約数和(自身を含む): 24796800

約数和(自身を除く): 3341069

約数列:

[1, 11, 19, 209, 251, 409, 2761, 4499, 4769, 7771, 52459, 85481, 102659, 1129249, 1950521, 21455731]

約数ペア:

[(1, 21455731), (11, 1950521), (19, 1129249), (209, 102659), (251, 85481), (409, 52459), (2761, 7771), (4499, 4769)]