81248080

素因数分解:

$2^4\times 5^1\times {\mathrm{1015601}}^1$

素因数の和:1015614

約数の個数: 20

約数和(自身を含む): 188901972

約数和(自身を除く): 107653892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1015601, 2031202, 4062404, 5078005, 8124808, 10156010, 16249616, 20312020, 40624040, 81248080]

約数ペア:

[(1, 81248080), (2, 40624040), (4, 20312020), (5, 16249616), (8, 10156010), (10, 8124808), (16, 5078005), (20, 4062404), (40, 2031202), (80, 1015601)]