20038772

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{401}}^1$

素因数の和:480

約数の個数: 36

約数和(自身を含む): 39120228

約数和(自身を除く): 19081456

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 401, 403, 802, 806, 961, 1604, 1612, 1922, 3844, 5213, 10426, 12431, 12493, 20852, 24862, 24986, 49724, 49972, 161603, 323206, 385361, 646412, 770722, 1541444, 5009693, 10019386, 20038772]

約数ペア:

[(1, 20038772), (2, 10019386), (4, 5009693), (13, 1541444), (26, 770722), (31, 646412), (52, 385361), (62, 323206), (124, 161603), (401, 49972), (403, 49724), (802, 24986), (806, 24862), (961, 20852), (1604, 12493), (1612, 12431), (1922, 10426), (3844, 5213)]