18305080

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1087}}^1$

素因数の和:1519

約数の個数: 32

約数和(自身を含む): 41322240

約数和(自身を除く): 23017160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1087, 1684, 2105, 2174, 3368, 4210, 4348, 5435, 8420, 8696, 10870, 16840, 21740, 43480, 457627, 915254, 1830508, 2288135, 3661016, 4576270, 9152540, 18305080]

約数ペア:

[(1, 18305080), (2, 9152540), (4, 4576270), (5, 3661016), (8, 2288135), (10, 1830508), (20, 915254), (40, 457627), (421, 43480), (842, 21740), (1087, 16840), (1684, 10870), (2105, 8696), (2174, 8420), (3368, 5435), (4210, 4348)]