79328020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{36389}}^1$

素因数の和:36507

約数の個数: 24

約数和(自身を含む): 168121800

約数和(自身を除く): 88793780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 36389, 72778, 145556, 181945, 363890, 727780, 3966401, 7932802, 15865604, 19832005, 39664010, 79328020]

約数ペア:

[(1, 79328020), (2, 39664010), (4, 19832005), (5, 15865604), (10, 7932802), (20, 3966401), (109, 727780), (218, 363890), (436, 181945), (545, 145556), (1090, 72778), (2180, 36389)]