81716564

素因数分解:

$2^2\times {\mathrm{199}}^1\times {\mathrm{251}}^1\times {\mathrm{409}}^1$

素因数の和:863

約数の個数: 24

約数和(自身を含む): 144648000

約数和(自身を除く): 62931436

約数列:

[1, 2, 4, 199, 251, 398, 409, 502, 796, 818, 1004, 1636, 49949, 81391, 99898, 102659, 162782, 199796, 205318, 325564, 410636, 20429141, 40858282, 81716564]

約数ペア:

[(1, 81716564), (2, 40858282), (4, 20429141), (199, 410636), (251, 325564), (398, 205318), (409, 199796), (502, 162782), (796, 102659), (818, 99898), (1004, 81391), (1636, 49949)]