20261689

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{317}}^1\times {\mathrm{397}}^1$

素因数の和:744

約数の個数: 16

約数和(自身を含む): 24300288

約数和(自身を除く): 4038599

約数列:

[1, 7, 23, 161, 317, 397, 2219, 2779, 7291, 9131, 51037, 63917, 125849, 880943, 2894527, 20261689]

約数ペア:

[(1, 20261689), (7, 2894527), (23, 880943), (161, 125849), (317, 63917), (397, 51037), (2219, 9131), (2779, 7291)]