20216405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{2683}}^1$

素因数の和:2836

約数の個数: 16

約数和(自身を含む): 26668224

約数和(自身を除く): 6451819

約数列:

[1, 5, 11, 55, 137, 685, 1507, 2683, 7535, 13415, 29513, 147565, 367571, 1837855, 4043281, 20216405]

約数ペア:

[(1, 20216405), (5, 4043281), (11, 1837855), (55, 367571), (137, 147565), (685, 29513), (1507, 13415), (2683, 7535)]