21778718

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{22639}}^1$

素因数の和:22691

約数の個数: 16

約数和(自身を含む): 36133440

約数和(自身を除く): 14354722

約数列:

[1, 2, 13, 26, 37, 74, 481, 962, 22639, 45278, 294307, 588614, 837643, 1675286, 10889359, 21778718]

約数ペア:

[(1, 21778718), (2, 10889359), (13, 1675286), (26, 837643), (37, 588614), (74, 294307), (481, 45278), (962, 22639)]