28986280

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{1301}}^1$

素因数の和:1869

約数の個数: 32

約数和(自身を含む): 65386440

約数和(自身を除く): 36400160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 1114, 1301, 2228, 2602, 2785, 4456, 5204, 5570, 6505, 10408, 11140, 13010, 22280, 26020, 52040, 724657, 1449314, 2898628, 3623285, 5797256, 7246570, 14493140, 28986280]

約数ペア:

[(1, 28986280), (2, 14493140), (4, 7246570), (5, 5797256), (8, 3623285), (10, 2898628), (20, 1449314), (40, 724657), (557, 52040), (1114, 26020), (1301, 22280), (2228, 13010), (2602, 11140), (2785, 10408), (4456, 6505), (5204, 5570)]