21388660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36877}}^1$

素因数の和:36915

約数の個数: 24

約数和(自身を含む): 46466280

約数和(自身を除く): 25077620

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36877, 73754, 147508, 184385, 368770, 737540, 1069433, 2138866, 4277732, 5347165, 10694330, 21388660]

約数ペア:

[(1, 21388660), (2, 10694330), (4, 5347165), (5, 4277732), (10, 2138866), (20, 1069433), (29, 737540), (58, 368770), (116, 184385), (145, 147508), (290, 73754), (580, 36877)]