20640064

素因数分解:

$2^6\times {\mathrm{322501}}^1$

素因数の和:322513

約数の個数: 14

約数和(自身を含む): 40957754

約数和(自身を除く): 20317690

約数列:

[1, 2, 4, 8, 16, 32, 64, 322501, 645002, 1290004, 2580008, 5160016, 10320032, 20640064]

約数ペア:

[(1, 20640064), (2, 10320032), (4, 5160016), (8, 2580008), (16, 1290004), (32, 645002), (64, 322501)]