18771193

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{211}}^1$

素因数の和:468

約数の個数: 16

約数和(自身を含む): 21980160

約数和(自身を除く): 3208967

約数列:

[1, 7, 71, 179, 211, 497, 1253, 1477, 12709, 14981, 37769, 88963, 104867, 264383, 2681599, 18771193]

約数ペア:

[(1, 18771193), (7, 2681599), (71, 264383), (179, 104867), (211, 88963), (497, 37769), (1253, 14981), (1477, 12709)]