27899907

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2521}}^1$

素因数の和:2579

約数の個数: 32

約数和(自身を含む): 46485504

約数和(自身を除く): 18585597

約数列:

[1, 3, 7, 17, 21, 31, 51, 93, 119, 217, 357, 527, 651, 1581, 2521, 3689, 7563, 11067, 17647, 42857, 52941, 78151, 128571, 234453, 299999, 547057, 899997, 1328567, 1641171, 3985701, 9299969, 27899907]

約数ペア:

[(1, 27899907), (3, 9299969), (7, 3985701), (17, 1641171), (21, 1328567), (31, 899997), (51, 547057), (93, 299999), (119, 234453), (217, 128571), (357, 78151), (527, 52941), (651, 42857), (1581, 17647), (2521, 11067), (3689, 7563)]