21691964

素因数分解:

$2^2\times 7^1\times {\mathrm{167}}^1\times {\mathrm{4639}}^1$

素因数の和:4817

約数の個数: 24

約数和(自身を含む): 43653120

約数和(自身を除く): 21961156

約数列:

[1, 2, 4, 7, 14, 28, 167, 334, 668, 1169, 2338, 4639, 4676, 9278, 18556, 32473, 64946, 129892, 774713, 1549426, 3098852, 5422991, 10845982, 21691964]

約数ペア:

[(1, 21691964), (2, 10845982), (4, 5422991), (7, 3098852), (14, 1549426), (28, 774713), (167, 129892), (334, 64946), (668, 32473), (1169, 18556), (2338, 9278), (4639, 4676)]