221420813

素因数分解:

${\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1\times {\mathrm{1087}}^1$

素因数の和:1328

約数の個数: 16

約数和(自身を含む): 238141440

約数和(自身を除く): 16720627

約数列:

[1, 19, 71, 151, 1087, 1349, 2869, 10721, 20653, 77177, 164137, 203699, 1466363, 3118603, 11653727, 221420813]

約数ペア:

[(1, 221420813), (19, 11653727), (71, 3118603), (151, 1466363), (1087, 203699), (1349, 164137), (2869, 77177), (10721, 20653)]