20871688

素因数分解:

$2^3\times {\mathrm{127}}^1\times {\mathrm{20543}}^1$

素因数の和:20676

約数の個数: 16

約数和(自身を含む): 39444480

約数和(自身を除く): 18572792

約数列:

[1, 2, 4, 8, 127, 254, 508, 1016, 20543, 41086, 82172, 164344, 2608961, 5217922, 10435844, 20871688]

約数ペア:

[(1, 20871688), (2, 10435844), (4, 5217922), (8, 2608961), (127, 164344), (254, 82172), (508, 41086), (1016, 20543)]