216403781

素因数分解:

${\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{241}}^1$

素因数の和:485

約数の個数: 24

約数和(自身を含む): 246029784

約数和(自身を除く): 29626003

約数列:

[1, 11, 41, 121, 181, 241, 451, 1991, 2651, 4961, 7421, 9881, 21901, 29161, 43621, 81631, 108691, 479831, 897941, 1195601, 1788461, 5278141, 19673071, 216403781]

約数ペア:

[(1, 216403781), (11, 19673071), (41, 5278141), (121, 1788461), (181, 1195601), (241, 897941), (451, 479831), (1991, 108691), (2651, 81631), (4961, 43621), (7421, 29161), (9881, 21901)]