19982871

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{997}}^1$

素因数の和:1151

約数の個数: 24

約数和(自身を含む): 30826224

約数和(自身を除く): 10843353

約数列:

[1, 3, 9, 17, 51, 131, 153, 393, 997, 1179, 2227, 2991, 6681, 8973, 16949, 20043, 50847, 130607, 152541, 391821, 1175463, 2220319, 6660957, 19982871]

約数ペア:

[(1, 19982871), (3, 6660957), (9, 2220319), (17, 1175463), (51, 391821), (131, 152541), (153, 130607), (393, 50847), (997, 20043), (1179, 16949), (2227, 8973), (2991, 6681)]