6439780

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{2161}}^1$

素因数の和:2319

約数の個数: 24

約数和(自身を含む): 13620600

約数和(自身を除く): 7180820

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2161, 2980, 4322, 8644, 10805, 21610, 43220, 321989, 643978, 1287956, 1609945, 3219890, 6439780]

約数ペア:

[(1, 6439780), (2, 3219890), (4, 1609945), (5, 1287956), (10, 643978), (20, 321989), (149, 43220), (298, 21610), (596, 10805), (745, 8644), (1490, 4322), (2161, 2980)]