21857198

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{181}}^1\times {\mathrm{499}}^1$

素因数の和:704

約数の個数: 24

約数和(自身を含む): 36309000

約数和(自身を除く): 14451802

約数列:

[1, 2, 11, 22, 121, 181, 242, 362, 499, 998, 1991, 3982, 5489, 10978, 21901, 43802, 60379, 90319, 120758, 180638, 993509, 1987018, 10928599, 21857198]

約数ペア:

[(1, 21857198), (2, 10928599), (11, 1987018), (22, 993509), (121, 180638), (181, 120758), (242, 90319), (362, 60379), (499, 43802), (998, 21901), (1991, 10978), (3982, 5489)]