21103817

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{1627}}^1$

素因数の和:1760

約数の個数: 16

約数和(自身を含む): 25787520

約数和(自身を除く): 4683703

約数列:

[1, 7, 17, 109, 119, 763, 1627, 1853, 11389, 12971, 27659, 177343, 193613, 1241401, 3014831, 21103817]

約数ペア:

[(1, 21103817), (7, 3014831), (17, 1241401), (109, 193613), (119, 177343), (763, 27659), (1627, 12971), (1853, 11389)]