216121647

素因数分解:

$3^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{65551}}^1$

素因数の和:65718

約数の個数: 16

約数和(自身を含む): 331430912

約数和(自身を除く): 115309265

約数列:

[1, 3, 7, 21, 157, 471, 1099, 3297, 65551, 196653, 458857, 1376571, 10291507, 30874521, 72040549, 216121647]

約数ペア:

[(1, 216121647), (3, 72040549), (7, 30874521), (21, 10291507), (157, 1376571), (471, 458857), (1099, 196653), (3297, 65551)]