20200720

素因数分解:

$2^4\times 5^1\times {\mathrm{252509}}^1$

素因数の和:252522

約数の個数: 20

約数和(自身を含む): 46966860

約数和(自身を除く): 26766140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252509, 505018, 1010036, 1262545, 2020072, 2525090, 4040144, 5050180, 10100360, 20200720]

約数ペア:

[(1, 20200720), (2, 10100360), (4, 5050180), (5, 4040144), (8, 2525090), (10, 2020072), (16, 1262545), (20, 1010036), (40, 505018), (80, 252509)]