204065720

素因数分解:

$2^3\times 5^1\times {\mathrm{5101643}}^1$

素因数の和:5101654

約数の個数: 16

約数和(自身を含む): 459147960

約数和(自身を除く): 255082240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5101643, 10203286, 20406572, 25508215, 40813144, 51016430, 102032860, 204065720]

約数ペア:

[(1, 204065720), (2, 102032860), (4, 51016430), (5, 40813144), (8, 25508215), (10, 20406572), (20, 10203286), (40, 5101643)]