21314321

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{787}}^1$

素因数の和:920

約数の個数: 16

約数和(自身を含む): 25190784

約数和(自身を除く): 3876463

約数列:

[1, 7, 53, 73, 371, 511, 787, 3869, 5509, 27083, 41711, 57451, 291977, 402157, 3044903, 21314321]

約数ペア:

[(1, 21314321), (7, 3044903), (53, 402157), (73, 291977), (371, 57451), (511, 41711), (787, 27083), (3869, 5509)]