20519885

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{503}}^1$

素因数の和:748

約数の個数: 16

約数和(自身を含む): 25401600

約数和(自身を除く): 4881715

約数列:

[1, 5, 41, 199, 205, 503, 995, 2515, 8159, 20623, 40795, 100097, 103115, 500485, 4103977, 20519885]

約数ペア:

[(1, 20519885), (5, 4103977), (41, 500485), (199, 103115), (205, 100097), (503, 40795), (995, 20623), (2515, 8159)]