81423979

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{38903}}^1$

素因数の和:38946

約数の個数: 16

約数和(自身を含む): 104573952

約数和(自身を除く): 23149973

約数列:

[1, 7, 13, 23, 91, 161, 299, 2093, 38903, 272321, 505739, 894769, 3540173, 6263383, 11631997, 81423979]

約数ペア:

[(1, 81423979), (7, 11631997), (13, 6263383), (23, 3540173), (91, 894769), (161, 505739), (299, 272321), (2093, 38903)]