680080

素因数分解:

$2^4\times 5^1\times {\mathrm{8501}}^1$

素因数の和:8514

約数の個数: 20

約数和(自身を含む): 1581372

約数和(自身を除く): 901292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8501, 17002, 34004, 42505, 68008, 85010, 136016, 170020, 340040, 680080]

約数ペア:

[(1, 680080), (2, 340040), (4, 170020), (5, 136016), (8, 85010), (10, 68008), (16, 42505), (20, 34004), (40, 17002), (80, 8501)]