80993020

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{39317}}^1$

素因数の和:39429

約数の個数: 24

約数和(自身を含む): 171741024

約数和(自身を除く): 90748004

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 39317, 78634, 157268, 196585, 393170, 786340, 4049651, 8099302, 16198604, 20248255, 40496510, 80993020]

約数ペア:

[(1, 80993020), (2, 40496510), (4, 20248255), (5, 16198604), (10, 8099302), (20, 4049651), (103, 786340), (206, 393170), (412, 196585), (515, 157268), (1030, 78634), (2060, 39317)]