21679879

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{373}}^1$

素因数の和:666

約数の個数: 16

約数和(自身を含む): 24881472

約数和(自身を除く): 3201593

約数列:

[1, 13, 17, 221, 263, 373, 3419, 4471, 4849, 6341, 58123, 82433, 98099, 1275287, 1667683, 21679879]

約数ペア:

[(1, 21679879), (13, 1667683), (17, 1275287), (221, 98099), (263, 82433), (373, 58123), (3419, 6341), (4471, 4849)]