21086516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{479239}}^1$

素因数の和:479254

約数の個数: 12

約数和(自身を含む): 40256160

約数和(自身を除く): 19169644

約数列:

[1, 2, 4, 11, 22, 44, 479239, 958478, 1916956, 5271629, 10543258, 21086516]

約数ペア:

[(1, 21086516), (2, 10543258), (4, 5271629), (11, 1916956), (22, 958478), (44, 479239)]