81136520

素因数分解:

$2^3\times 5^1\times {\mathrm{2028413}}^1$

素因数の和:2028424

約数の個数: 16

約数和(自身を含む): 182557260

約数和(自身を除く): 101420740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2028413, 4056826, 8113652, 10142065, 16227304, 20284130, 40568260, 81136520]

約数ペア:

[(1, 81136520), (2, 40568260), (4, 20284130), (5, 16227304), (8, 10142065), (10, 8113652), (20, 4056826), (40, 2028413)]