21511138

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{103}}^1\times {\mathrm{863}}^1$

素因数の和:990

約数の個数: 24

約数和(自身を含む): 35852544

約数和(自身を除く): 14341406

約数列:

[1, 2, 11, 22, 103, 121, 206, 242, 863, 1133, 1726, 2266, 9493, 12463, 18986, 24926, 88889, 104423, 177778, 208846, 977779, 1955558, 10755569, 21511138]

約数ペア:

[(1, 21511138), (2, 10755569), (11, 1955558), (22, 977779), (103, 208846), (121, 177778), (206, 104423), (242, 88889), (863, 24926), (1133, 18986), (1726, 12463), (2266, 9493)]