21254032

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{8461}}^1$

素因数の和:8626

約数の個数: 20

約数和(自身を含む): 41446876

約数和(自身を除く): 20192844

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 8461, 16922, 33844, 67688, 135376, 1328377, 2656754, 5313508, 10627016, 21254032]

約数ペア:

[(1, 21254032), (2, 10627016), (4, 5313508), (8, 2656754), (16, 1328377), (157, 135376), (314, 67688), (628, 33844), (1256, 16922), (2512, 8461)]