19973487

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{3593}}^1$

素因数の和:3722

約数の個数: 16

約数和(自身を含む): 28464480

約数和(自身を除く): 8490993

約数列:

[1, 3, 17, 51, 109, 327, 1853, 3593, 5559, 10779, 61081, 183243, 391637, 1174911, 6657829, 19973487]

約数ペア:

[(1, 19973487), (3, 6657829), (17, 1174911), (51, 391637), (109, 183243), (327, 61081), (1853, 10779), (3593, 5559)]