20149955

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{25031}}^1$

素因数の和:25066

約数の個数: 16

約数和(自身を含む): 28836864

約数和(自身を除く): 8686909

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 25031, 125155, 175217, 575713, 876085, 2878565, 4029991, 20149955]

約数ペア:

[(1, 20149955), (5, 4029991), (7, 2878565), (23, 876085), (35, 575713), (115, 175217), (161, 125155), (805, 25031)]