20948079

素因数分解:

$3^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1\times {\mathrm{353}}^1$

素因数の和:638

約数の個数: 16

約数和(自身を含む): 28410624

約数和(自身を除く): 7462545

約数列:

[1, 3, 131, 151, 353, 393, 453, 1059, 19781, 46243, 53303, 59343, 138729, 159909, 6982693, 20948079]

約数ペア:

[(1, 20948079), (3, 6982693), (131, 159909), (151, 138729), (353, 59343), (393, 53303), (453, 46243), (1059, 19781)]