21317813

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{3931}}^1$

素因数の和:3988

約数の個数: 16

約数和(自身を含む): 25479360

約数和(自身を除く): 4161547

約数列:

[1, 11, 17, 29, 187, 319, 493, 3931, 5423, 43241, 66827, 113999, 735097, 1253989, 1937983, 21317813]

約数ペア:

[(1, 21317813), (11, 1937983), (17, 1253989), (29, 735097), (187, 113999), (319, 66827), (493, 43241), (3931, 5423)]