19888

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{113}}^1$

素因数の和:132

約数の個数: 20

約数和(自身を含む): 42408

約数和(自身を除く): 22520

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 113, 176, 226, 452, 904, 1243, 1808, 2486, 4972, 9944, 19888]

約数ペア:

[(1, 19888), (2, 9944), (4, 4972), (8, 2486), (11, 1808), (16, 1243), (22, 904), (44, 452), (88, 226), (113, 176)]