18861904

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{8999}}^1$

素因数の和:9138

約数の個数: 20

約数和(自身を含む): 36828000

約数和(自身を除く): 17966096

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 8999, 17998, 35996, 71992, 143984, 1178869, 2357738, 4715476, 9430952, 18861904]

約数ペア:

[(1, 18861904), (2, 9430952), (4, 4715476), (8, 2357738), (16, 1178869), (131, 143984), (262, 71992), (524, 35996), (1048, 17998), (2096, 8999)]