20538908

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{1321}}^1$

素因数の和:1374

約数の個数: 36

約数和(自身を含む): 40643568

約数和(自身を除く): 20104660

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 92, 169, 299, 338, 598, 676, 1196, 1321, 2642, 3887, 5284, 7774, 15548, 17173, 30383, 34346, 60766, 68692, 121532, 223249, 394979, 446498, 789958, 892996, 1579916, 5134727, 10269454, 20538908]

約数ペア:

[(1, 20538908), (2, 10269454), (4, 5134727), (13, 1579916), (23, 892996), (26, 789958), (46, 446498), (52, 394979), (92, 223249), (169, 121532), (299, 68692), (338, 60766), (598, 34346), (676, 30383), (1196, 17173), (1321, 15548), (2642, 7774), (3887, 5284)]