20804135

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{137}}^1\times {\mathrm{251}}^1$

素因数の和:415

約数の個数: 24

約数和(自身を含む): 27751248

約数和(自身を除く): 6947113

約数列:

[1, 5, 11, 55, 121, 137, 251, 605, 685, 1255, 1507, 2761, 7535, 13805, 16577, 30371, 34387, 82885, 151855, 171935, 378257, 1891285, 4160827, 20804135]

約数ペア:

[(1, 20804135), (5, 4160827), (11, 1891285), (55, 378257), (121, 171935), (137, 151855), (251, 82885), (605, 34387), (685, 30371), (1255, 16577), (1507, 13805), (2761, 7535)]