20404889465

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1\times {\mathrm{110863}}^1$

素因数の和:111280

約数の個数: 16

約数和(自身を含む): 24760809216

約数和(自身を除く): 4355919751

約数列:

[1, 5, 131, 281, 655, 1405, 36811, 110863, 184055, 554315, 14523053, 31152503, 72615265, 155762515, 4080977893, 20404889465]

約数ペア:

[(1, 20404889465), (5, 4080977893), (131, 155762515), (281, 72615265), (655, 31152503), (1405, 14523053), (36811, 554315), (110863, 184055)]