21643544

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{208111}}^1$

素因数の和:208130

約数の個数: 16

約数和(自身を含む): 43703520

約数和(自身を除く): 22059976

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 208111, 416222, 832444, 1664888, 2705443, 5410886, 10821772, 21643544]

約数ペア:

[(1, 21643544), (2, 10821772), (4, 5410886), (8, 2705443), (13, 1664888), (26, 832444), (52, 416222), (104, 208111)]