18969999

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 27847680

約数和(自身を除く): 8877681

約数列:

[1, 3, 19, 47, 57, 73, 97, 141, 219, 291, 893, 1387, 1843, 2679, 3431, 4161, 4559, 5529, 7081, 10293, 13677, 21243, 65189, 86621, 134539, 195567, 259863, 332807, 403617, 998421, 6323333, 18969999]

約数ペア:

[(1, 18969999), (3, 6323333), (19, 998421), (47, 403617), (57, 332807), (73, 259863), (97, 195567), (141, 134539), (219, 86621), (291, 65189), (893, 21243), (1387, 13677), (1843, 10293), (2679, 7081), (3431, 5529), (4161, 4559)]