207977021

素因数分解:

$7^4\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:191

約数の個数: 40

約数和(自身を含む): 263518080

約数和(自身を除く): 55541059

約数列:

[1, 7, 19, 47, 49, 97, 133, 329, 343, 679, 893, 931, 1843, 2303, 2401, 4559, 4753, 6251, 6517, 12901, 16121, 31913, 33271, 43757, 45619, 86621, 90307, 112847, 223391, 232897, 306299, 606347, 632149, 1563737, 2144093, 4244429, 4425043, 10946159, 29711003, 207977021]

約数ペア:

[(1, 207977021), (7, 29711003), (19, 10946159), (47, 4425043), (49, 4244429), (97, 2144093), (133, 1563737), (329, 632149), (343, 606347), (679, 306299), (893, 232897), (931, 223391), (1843, 112847), (2303, 90307), (2401, 86621), (4559, 45619), (4753, 43757), (6251, 33271), (6517, 31913), (12901, 16121)]