20456828

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{8209}}^1$

素因数の和:8309

約数の個数: 24

約数和(自身を含む): 41378400

約数和(自身を除く): 20921572

約数列:

[1, 2, 4, 7, 14, 28, 89, 178, 356, 623, 1246, 2492, 8209, 16418, 32836, 57463, 114926, 229852, 730601, 1461202, 2922404, 5114207, 10228414, 20456828]

約数ペア:

[(1, 20456828), (2, 10228414), (4, 5114207), (7, 2922404), (14, 1461202), (28, 730601), (89, 229852), (178, 114926), (356, 57463), (623, 32836), (1246, 16418), (2492, 8209)]