12687339

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{19489}}^1$

素因数の和:19530

約数の個数: 16

約数和(自身を含む): 19957760

約数和(自身を除く): 7270421

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 19489, 58467, 136423, 409269, 604159, 1812477, 4229113, 12687339]

約数ペア:

[(1, 12687339), (3, 4229113), (7, 1812477), (21, 604159), (31, 409269), (93, 136423), (217, 58467), (651, 19489)]