20980030

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{26557}}^1$

素因数の和:26643

約数の個数: 16

約数和(自身を含む): 38243520

約数和(自身を除く): 17263490

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 26557, 53114, 132785, 265570, 2098003, 4196006, 10490015, 20980030]

約数ペア:

[(1, 20980030), (2, 10490015), (5, 4196006), (10, 2098003), (79, 265570), (158, 132785), (395, 53114), (790, 26557)]