21331218

素因数分解:

$2^1\times 3^1\times {\mathrm{139}}^1\times {\mathrm{25577}}^1$

素因数の和:25721

約数の個数: 16

約数和(自身を含む): 42971040

約数和(自身を除く): 21639822

約数列:

[1, 2, 3, 6, 139, 278, 417, 834, 25577, 51154, 76731, 153462, 3555203, 7110406, 10665609, 21331218]

約数ペア:

[(1, 21331218), (2, 10665609), (3, 7110406), (6, 3555203), (139, 153462), (278, 76731), (417, 51154), (834, 25577)]