20216720

素因数分解:

$2^4\times 5^1\times {\mathrm{252709}}^1$

素因数の和:252722

約数の個数: 20

約数和(自身を含む): 47004060

約数和(自身を除く): 26787340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252709, 505418, 1010836, 1263545, 2021672, 2527090, 4043344, 5054180, 10108360, 20216720]

約数ペア:

[(1, 20216720), (2, 10108360), (4, 5054180), (5, 4043344), (8, 2527090), (10, 2021672), (16, 1263545), (20, 1010836), (40, 505418), (80, 252709)]