21239758

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{367}}^1\times {\mathrm{1523}}^1$

素因数の和:1911

約数の個数: 16

約数和(自身を含む): 33649920

約数和(自身を除く): 12410162

約数列:

[1, 2, 19, 38, 367, 734, 1523, 3046, 6973, 13946, 28937, 57874, 558941, 1117882, 10619879, 21239758]

約数ペア:

[(1, 21239758), (2, 10619879), (19, 1117882), (38, 558941), (367, 57874), (734, 28937), (1523, 13946), (3046, 6973)]