21424989

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:385

約数の個数: 24

約数和(自身を含む): 30675072

約数和(自身を除く): 9250083

約数列:

[1, 3, 19, 57, 73, 219, 271, 361, 813, 1083, 1387, 4161, 5149, 15447, 19783, 26353, 59349, 79059, 97831, 293493, 375877, 1127631, 7141663, 21424989]

約数ペア:

[(1, 21424989), (3, 7141663), (19, 1127631), (57, 375877), (73, 293493), (219, 97831), (271, 79059), (361, 59349), (813, 26353), (1083, 19783), (1387, 15447), (4161, 5149)]