19161989

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{487}}^1$

素因数の和:585

約数の個数: 24

約数和(自身を含む): 24700608

約数和(自身を除く): 5538619

約数列:

[1, 7, 11, 49, 73, 77, 487, 511, 539, 803, 3409, 3577, 5357, 5621, 23863, 35551, 37499, 39347, 248857, 262493, 391061, 1741999, 2737427, 19161989]

約数ペア:

[(1, 19161989), (7, 2737427), (11, 1741999), (49, 391061), (73, 262493), (77, 248857), (487, 39347), (511, 37499), (539, 35551), (803, 23863), (3409, 5621), (3577, 5357)]