159580

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:189

約数の個数: 24

約数和(自身を含む): 342720

約数和(自身を除く): 183140

約数列:

[1, 2, 4, 5, 10, 20, 79, 101, 158, 202, 316, 395, 404, 505, 790, 1010, 1580, 2020, 7979, 15958, 31916, 39895, 79790, 159580]

約数ペア:

[(1, 159580), (2, 79790), (4, 39895), (5, 31916), (10, 15958), (20, 7979), (79, 2020), (101, 1580), (158, 1010), (202, 790), (316, 505), (395, 404)]