28269940

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{7103}}^1$

素因数の和:7311

約数の個数: 24

約数和(自身を含む): 59673600

約数和(自身を除く): 31403660

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 7103, 14206, 28412, 35515, 71030, 142060, 1413497, 2826994, 5653988, 7067485, 14134970, 28269940]

約数ペア:

[(1, 28269940), (2, 14134970), (4, 7067485), (5, 5653988), (10, 2826994), (20, 1413497), (199, 142060), (398, 71030), (796, 35515), (995, 28412), (1990, 14206), (3980, 7103)]