219980991

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{55009}}^1$

素因数の和:55086

約数の個数: 16

約数和(自身を含む): 309816320

約数和(自身を除く): 89835329

約数列:

[1, 3, 31, 43, 93, 129, 1333, 3999, 55009, 165027, 1705279, 2365387, 5115837, 7096161, 73326997, 219980991]

約数ペア:

[(1, 219980991), (3, 73326997), (31, 7096161), (43, 5115837), (93, 2365387), (129, 1705279), (1333, 165027), (3999, 55009)]