21012518

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1\times {\mathrm{1459}}^1$

素因数の和:1859

約数の個数: 16

約数和(自身を含む): 33288000

約数和(自身を除く): 12275482

約数列:

[1, 2, 19, 38, 379, 758, 1459, 2918, 7201, 14402, 27721, 55442, 552961, 1105922, 10506259, 21012518]

約数ペア:

[(1, 21012518), (2, 10506259), (19, 1105922), (38, 552961), (379, 55442), (758, 27721), (1459, 14402), (2918, 7201)]