28240540

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13709}}^1$

素因数の和:13821

約数の個数: 24

約数和(自身を含む): 59885280

約数和(自身を除く): 31644740

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 13709, 27418, 54836, 68545, 137090, 274180, 1412027, 2824054, 5648108, 7060135, 14120270, 28240540]

約数ペア:

[(1, 28240540), (2, 14120270), (4, 7060135), (5, 5648108), (10, 2824054), (20, 1412027), (103, 274180), (206, 137090), (412, 68545), (515, 54836), (1030, 27418), (2060, 13709)]