21109018

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{40751}}^1$

素因数の和:40797

約数の個数: 16

約数和(自身を含む): 37165824

約数和(自身を除く): 16056806

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 40751, 81502, 285257, 570514, 1507787, 3015574, 10554509, 21109018]

約数ペア:

[(1, 21109018), (2, 10554509), (7, 3015574), (14, 1507787), (37, 570514), (74, 285257), (259, 81502), (518, 40751)]