21006309

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{2549}}^1$

素因数の和:2660

約数の個数: 16

約数和(自身を含む): 29131200

約数和(自身を除く): 8124891

約数列:

[1, 3, 41, 67, 123, 201, 2549, 2747, 7647, 8241, 104509, 170783, 313527, 512349, 7002103, 21006309]

約数ペア:

[(1, 21006309), (3, 7002103), (41, 512349), (67, 313527), (123, 170783), (201, 104509), (2549, 8241), (2747, 7647)]