20127778

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{313}}^1$

素因数の和:442

約数の個数: 32

約数和(自身を含む): 34364160

約数和(自身を除く): 14236382

約数列:

[1, 2, 11, 22, 37, 74, 79, 158, 313, 407, 626, 814, 869, 1738, 2923, 3443, 5846, 6886, 11581, 23162, 24727, 32153, 49454, 64306, 127391, 254782, 271997, 543994, 914899, 1829798, 10063889, 20127778]

約数ペア:

[(1, 20127778), (2, 10063889), (11, 1829798), (22, 914899), (37, 543994), (74, 271997), (79, 254782), (158, 127391), (313, 64306), (407, 49454), (626, 32153), (814, 24727), (869, 23162), (1738, 11581), (2923, 6886), (3443, 5846)]