257721167170

素因数分解:

$2^1\times 5^1\times {\mathrm{198971}}^1\times {\mathrm{129527}}^1$

素因数の和:328505

約数の個数: 16

約数和(自身を含む): 463904013888

約数和(自身を除く): 206182846718

約数列:

[1, 2, 5, 10, 129527, 198971, 259054, 397942, 647635, 994855, 1295270, 1989710, 25772116717, 51544233434, 128860583585, 257721167170]

約数ペア:

[(1, 257721167170), (2, 128860583585), (5, 51544233434), (10, 25772116717), (129527, 1989710), (198971, 1295270), (259054, 994855), (397942, 647635)]