2638864

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{1259}}^1$

素因数の和:1398

約数の個数: 20

約数和(自身を含む): 5155920

約数和(自身を除く): 2517056

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 1259, 2096, 2518, 5036, 10072, 20144, 164929, 329858, 659716, 1319432, 2638864]

約数ペア:

[(1, 2638864), (2, 1319432), (4, 659716), (8, 329858), (16, 164929), (131, 20144), (262, 10072), (524, 5036), (1048, 2518), (1259, 2096)]