19945991

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{3511}}^1$

素因数の和:3566

約数の個数: 16

約数和(自身を含む): 23600640

約数和(自身を除く): 3654649

約数列:

[1, 13, 19, 23, 247, 299, 437, 3511, 5681, 45643, 66709, 80753, 867217, 1049789, 1534307, 19945991]

約数ペア:

[(1, 19945991), (13, 1534307), (19, 1049789), (23, 867217), (247, 80753), (299, 66709), (437, 45643), (3511, 5681)]