640494342

素因数分解:

$2^1\times 3^2\times {\mathrm{2081}}^1\times {\mathrm{17099}}^1$

素因数の和:19188

約数の個数: 24

約数和(自身を含む): 1388485800

約数和(自身を除く): 747991458

約数列:

[1, 2, 3, 6, 9, 18, 2081, 4162, 6243, 12486, 17099, 18729, 34198, 37458, 51297, 102594, 153891, 307782, 35583019, 71166038, 106749057, 213498114, 320247171, 640494342]

約数ペア:

[(1, 640494342), (2, 320247171), (3, 213498114), (6, 106749057), (9, 71166038), (18, 35583019), (2081, 307782), (4162, 153891), (6243, 102594), (12486, 51297), (17099, 37458), (18729, 34198)]