1621977844

素因数分解:

$2^2\times {\mathrm{409}}^1\times {\mathrm{991429}}^1$

素因数の和:991842

約数の個数: 12

約数和(自身を含む): 2845404100

約数和(自身を除く): 1223426256

約数列:

[1, 2, 4, 409, 818, 1636, 991429, 1982858, 3965716, 405494461, 810988922, 1621977844]

約数ペア:

[(1, 1621977844), (2, 810988922), (4, 405494461), (409, 3965716), (818, 1982858), (1636, 991429)]