20787170

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{90379}}^1$

素因数の和:90409

約数の個数: 16

約数和(自身を含む): 39044160

約数和(自身を除く): 18256990

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 90379, 180758, 451895, 903790, 2078717, 4157434, 10393585, 20787170]

約数ペア:

[(1, 20787170), (2, 10393585), (5, 4157434), (10, 2078717), (23, 903790), (46, 451895), (115, 180758), (230, 90379)]