21428968

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2411}}^1$

素因数の和:2529

約数の個数: 32

約数和(自身を含む): 44284320

約数和(自身を除く): 22855352

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 101, 202, 404, 808, 1111, 2222, 2411, 4444, 4822, 8888, 9644, 19288, 26521, 53042, 106084, 212168, 243511, 487022, 974044, 1948088, 2678621, 5357242, 10714484, 21428968]

約数ペア:

[(1, 21428968), (2, 10714484), (4, 5357242), (8, 2678621), (11, 1948088), (22, 974044), (44, 487022), (88, 243511), (101, 212168), (202, 106084), (404, 53042), (808, 26521), (1111, 19288), (2222, 9644), (2411, 8888), (4444, 4822)]