20641570

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{121421}}^1$

素因数の和:121445

約数の個数: 16

約数和(自身を含む): 39340728

約数和(自身を除く): 18699158

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 121421, 242842, 607105, 1214210, 2064157, 4128314, 10320785, 20641570]

約数ペア:

[(1, 20641570), (2, 10320785), (5, 4128314), (10, 2064157), (17, 1214210), (34, 607105), (85, 242842), (170, 121421)]