21170123

素因数分解:

${\mathrm{13}}^2\times {\mathrm{19}}^2\times {\mathrm{347}}^1$

素因数の和:411

約数の個数: 18

約数和(自身を含む): 24263604

約数和(自身を除く): 3093481

約数列:

[1, 13, 19, 169, 247, 347, 361, 3211, 4511, 4693, 6593, 58643, 61009, 85709, 125267, 1114217, 1628471, 21170123]

約数ペア:

[(1, 21170123), (13, 1628471), (19, 1114217), (169, 125267), (247, 85709), (347, 61009), (361, 58643), (3211, 6593), (4511, 4693)]