21201866

素因数分解:

$2^1\times 7^1\times {\mathrm{1103}}^1\times {\mathrm{1373}}^1$

素因数の和:2485

約数の個数: 16

約数和(自身を含む): 36405504

約数和(自身を除く): 15203638

約数列:

[1, 2, 7, 14, 1103, 1373, 2206, 2746, 7721, 9611, 15442, 19222, 1514419, 3028838, 10600933, 21201866]

約数ペア:

[(1, 21201866), (2, 10600933), (7, 3028838), (14, 1514419), (1103, 19222), (1373, 15442), (2206, 9611), (2746, 7721)]