217652020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{640153}}^1$

素因数の和:640179

約数の個数: 24

約数和(自身を含む): 483956424

約数和(自身を除く): 266304404

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 640153, 1280306, 2560612, 3200765, 6401530, 10882601, 12803060, 21765202, 43530404, 54413005, 108826010, 217652020]

約数ペア:

[(1, 217652020), (2, 108826010), (4, 54413005), (5, 43530404), (10, 21765202), (17, 12803060), (20, 10882601), (34, 6401530), (68, 3200765), (85, 2560612), (170, 1280306), (340, 640153)]