26781279

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67121}}^1$

素因数の和:67150

約数の個数: 16

約数和(自身を含む): 42958080

約数和(自身を除く): 16176801

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 67121, 201363, 469847, 1275299, 1409541, 3825897, 8927093, 26781279]

約数ペア:

[(1, 26781279), (3, 8927093), (7, 3825897), (19, 1409541), (21, 1275299), (57, 469847), (133, 201363), (399, 67121)]