18939479

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1993}}^1$

素因数の和:2066

約数の個数: 16

約数和(自身を含む): 22109472

約数和(自身を除く): 3169993

約数列:

[1, 13, 17, 43, 221, 559, 731, 1993, 9503, 25909, 33881, 85699, 440453, 1114087, 1456883, 18939479]

約数ペア:

[(1, 18939479), (13, 1456883), (17, 1114087), (43, 440453), (221, 85699), (559, 33881), (731, 25909), (1993, 9503)]