21765986

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{881}}^1\times {\mathrm{1123}}^1$

素因数の和:2017

約数の個数: 16

約数和(自身を含む): 35689248

約数和(自身を除く): 13923262

約数列:

[1, 2, 11, 22, 881, 1123, 1762, 2246, 9691, 12353, 19382, 24706, 989363, 1978726, 10882993, 21765986]

約数ペア:

[(1, 21765986), (2, 10882993), (11, 1978726), (22, 989363), (881, 24706), (1123, 19382), (1762, 12353), (2246, 9691)]