81871816

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{7643}}^1$

素因数の和:7765

約数の個数: 32

約数和(自身を含む): 166944960

約数和(自身を除く): 85073144

約数列:

[1, 2, 4, 8, 13, 26, 52, 103, 104, 206, 412, 824, 1339, 2678, 5356, 7643, 10712, 15286, 30572, 61144, 99359, 198718, 397436, 787229, 794872, 1574458, 3148916, 6297832, 10233977, 20467954, 40935908, 81871816]

約数ペア:

[(1, 81871816), (2, 40935908), (4, 20467954), (8, 10233977), (13, 6297832), (26, 3148916), (52, 1574458), (103, 794872), (104, 787229), (206, 397436), (412, 198718), (824, 99359), (1339, 61144), (2678, 30572), (5356, 15286), (7643, 10712)]