21340055

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{3767}}^1$

素因数の和:3886

約数の個数: 16

約数和(自身を含む): 28214784

約数和(自身を除く): 6874729

約数列:

[1, 5, 11, 55, 103, 515, 1133, 3767, 5665, 18835, 41437, 207185, 388001, 1940005, 4268011, 21340055]

約数ペア:

[(1, 21340055), (5, 4268011), (11, 1940005), (55, 388001), (103, 207185), (515, 41437), (1133, 18835), (3767, 5665)]