21714217

素因数分解:

$7^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:456

約数の個数: 16

約数和(自身を含む): 25344000

約数和(自身を除く): 3629783

約数列:

[1, 7, 109, 149, 191, 763, 1043, 1337, 16241, 20819, 28459, 113687, 145733, 199213, 3102031, 21714217]

約数ペア:

[(1, 21714217), (7, 3102031), (109, 199213), (149, 145733), (191, 113687), (763, 28459), (1043, 20819), (1337, 16241)]