81813215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{4783}}^1$

素因数の和:5110

約数の個数: 16

約数和(自身を含む): 107467776

約数和(自身を除く): 25654561

約数列:

[1, 5, 11, 55, 311, 1555, 3421, 4783, 17105, 23915, 52613, 263065, 1487513, 7437565, 16362643, 81813215]

約数ペア:

[(1, 81813215), (5, 16362643), (11, 7437565), (55, 1487513), (311, 263065), (1555, 52613), (3421, 23915), (4783, 17105)]