21528199

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{3631}}^1$

素因数の和:3667

約数の個数: 18

約数和(自身を含む): 27534192

約数和(自身を除く): 6005993

約数列:

[1, 7, 11, 49, 77, 121, 539, 847, 3631, 5929, 25417, 39941, 177919, 279587, 439351, 1957109, 3075457, 21528199]

約数ペア:

[(1, 21528199), (7, 3075457), (11, 1957109), (49, 439351), (77, 279587), (121, 177919), (539, 39941), (847, 25417), (3631, 5929)]