257820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{4297}}^1$

素因数の和:4309

約数の個数: 24

約数和(自身を含む): 722064

約数和(自身を除く): 464244

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 4297, 8594, 12891, 17188, 21485, 25782, 42970, 51564, 64455, 85940, 128910, 257820]

約数ペア:

[(1, 257820), (2, 128910), (3, 85940), (4, 64455), (5, 51564), (6, 42970), (10, 25782), (12, 21485), (15, 17188), (20, 12891), (30, 8594), (60, 4297)]