21118071

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{1811}}^1$

素因数の和:1863

約数の個数: 24

約数和(自身を含む): 31833216

約数和(自身を除く): 10715145

約数列:

[1, 3, 13, 23, 39, 69, 169, 299, 507, 897, 1811, 3887, 5433, 11661, 23543, 41653, 70629, 124959, 306059, 541489, 918177, 1624467, 7039357, 21118071]

約数ペア:

[(1, 21118071), (3, 7039357), (13, 1624467), (23, 918177), (39, 541489), (69, 306059), (169, 124959), (299, 70629), (507, 41653), (897, 23543), (1811, 11661), (3887, 5433)]