21188001

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{4283}}^1$

素因数の和:4400

約数の個数: 16

約数和(自身を含む): 30227904

約数和(自身を除く): 9039903

約数列:

[1, 3, 17, 51, 97, 291, 1649, 4283, 4947, 12849, 72811, 218433, 415451, 1246353, 7062667, 21188001]

約数ペア:

[(1, 21188001), (3, 7062667), (17, 1246353), (51, 415451), (97, 218433), (291, 72811), (1649, 12849), (4283, 4947)]