21112828

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{11159}}^1$

素因数の和:11217

約数の個数: 24

約数和(自身を含む): 41247360

約数和(自身を除く): 20134532

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 11159, 22318, 44636, 122749, 245498, 479837, 490996, 959674, 1919348, 5278207, 10556414, 21112828]

約数ペア:

[(1, 21112828), (2, 10556414), (4, 5278207), (11, 1919348), (22, 959674), (43, 490996), (44, 479837), (86, 245498), (172, 122749), (473, 44636), (946, 22318), (1892, 11159)]