21154885

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{13099}}^1$

素因数の和:13140

約数の個数: 16

約数和(自身を含む): 28296000

約数和(自身を除く): 7141115

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 13099, 65495, 222683, 248881, 1113415, 1244405, 4230977, 21154885]

約数ペア:

[(1, 21154885), (5, 4230977), (17, 1244405), (19, 1113415), (85, 248881), (95, 222683), (323, 65495), (1615, 13099)]