20511745

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{1031}}^1$

素因数の和:1232

約数の個数: 16

約数和(自身を含む): 25857792

約数和(自身を除く): 5346047

約数列:

[1, 5, 23, 115, 173, 865, 1031, 3979, 5155, 19895, 23713, 118565, 178363, 891815, 4102349, 20511745]

約数ペア:

[(1, 20511745), (5, 4102349), (23, 891815), (115, 178363), (173, 118565), (865, 23713), (1031, 19895), (3979, 5155)]