21049402

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{86981}}^1$

素因数の和:87005

約数の個数: 12

約数和(自身を含む): 34705818

約数和(自身を除く): 13656416

約数列:

[1, 2, 11, 22, 121, 242, 86981, 173962, 956791, 1913582, 10524701, 21049402]

約数ペア:

[(1, 21049402), (2, 10524701), (11, 1913582), (22, 956791), (121, 173962), (242, 86981)]