21505814

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{88867}}^1$

素因数の和:88891

約数の個数: 12

約数和(自身を含む): 35458332

約数和(自身を除く): 13952518

約数列:

[1, 2, 11, 22, 121, 242, 88867, 177734, 977537, 1955074, 10752907, 21505814]

約数ペア:

[(1, 21505814), (2, 10752907), (11, 1955074), (22, 977537), (121, 177734), (242, 88867)]