221432457

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{28097}}^1$

素因数の和:28208

約数の個数: 16

約数和(自身を含む): 307504512

約数和(自身を除く): 86072055

約数列:

[1, 3, 37, 71, 111, 213, 2627, 7881, 28097, 84291, 1039589, 1994887, 3118767, 5984661, 73810819, 221432457]

約数ペア:

[(1, 221432457), (3, 73810819), (37, 5984661), (71, 3118767), (111, 1994887), (213, 1039589), (2627, 84291), (7881, 28097)]