18993667

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{2543}}^1$

素因数の和:2658

約数の個数: 16

約数和(自身を含む): 23933952

約数和(自身を除く): 4940285

約数列:

[1, 7, 11, 77, 97, 679, 1067, 2543, 7469, 17801, 27973, 195811, 246671, 1726697, 2713381, 18993667]

約数ペア:

[(1, 18993667), (7, 2713381), (11, 1726697), (77, 246671), (97, 195811), (679, 27973), (1067, 17801), (2543, 7469)]