28391427

素因数分解:

$3^2\times {\mathrm{443}}^1\times {\mathrm{7121}}^1$

素因数の和:7570

約数の個数: 12

約数和(自身を含む): 41108184

約数和(自身を除く): 12716757

約数列:

[1, 3, 9, 443, 1329, 3987, 7121, 21363, 64089, 3154603, 9463809, 28391427]

約数ペア:

[(1, 28391427), (3, 9463809), (9, 3154603), (443, 64089), (1329, 21363), (3987, 7121)]