103280

素因数分解:

$2^4\times 5^1\times {\mathrm{1291}}^1$

素因数の和:1304

約数の個数: 20

約数和(自身を含む): 240312

約数和(自身を除く): 137032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1291, 2582, 5164, 6455, 10328, 12910, 20656, 25820, 51640, 103280]

約数ペア:

[(1, 103280), (2, 51640), (4, 25820), (5, 20656), (8, 12910), (10, 10328), (16, 6455), (20, 5164), (40, 2582), (80, 1291)]