640294508

素因数分解:

$2^2\times 7^1\times {\mathrm{22867661}}^1$

素因数の和:22867672

約数の個数: 12

約数和(自身を含む): 1280589072

約数和(自身を除く): 640294564

約数列:

[1, 2, 4, 7, 14, 28, 22867661, 45735322, 91470644, 160073627, 320147254, 640294508]

約数ペア:

[(1, 640294508), (2, 320147254), (4, 160073627), (7, 91470644), (14, 45735322), (28, 22867661)]