21508718

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{12697}}^1$

素因数の和:12728

約数の個数: 24

約数和(自身を含む): 40532016

約数和(自身を除く): 19023298

約数列:

[1, 2, 7, 11, 14, 22, 77, 121, 154, 242, 847, 1694, 12697, 25394, 88879, 139667, 177758, 279334, 977669, 1536337, 1955338, 3072674, 10754359, 21508718]

約数ペア:

[(1, 21508718), (2, 10754359), (7, 3072674), (11, 1955338), (14, 1536337), (22, 977669), (77, 279334), (121, 177758), (154, 139667), (242, 88879), (847, 25394), (1694, 12697)]