128140019

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{8317}}^1$

素因数の和:8426

約数の個数: 16

約数和(自身を含む): 153317376

約数和(自身を除く): 25177357

約数列:

[1, 7, 31, 71, 217, 497, 2201, 8317, 15407, 58219, 257827, 590507, 1804789, 4133549, 18305717, 128140019]

約数ペア:

[(1, 128140019), (7, 18305717), (31, 4133549), (71, 1804789), (217, 590507), (497, 257827), (2201, 58219), (8317, 15407)]