215087990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{127271}}^1$

素因数の和:127304

約数の個数: 24

約数和(自身を含む): 419233968

約数和(自身を除く): 204145978

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 127271, 254542, 636355, 1272710, 1654523, 3309046, 8272615, 16545230, 21508799, 43017598, 107543995, 215087990]

約数ペア:

[(1, 215087990), (2, 107543995), (5, 43017598), (10, 21508799), (13, 16545230), (26, 8272615), (65, 3309046), (130, 1654523), (169, 1272710), (338, 636355), (845, 254542), (1690, 127271)]