516400

素因数分解:

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

素因数の和:1309

約数の個数: 30

約数和(自身を含む): 1241612

約数和(自身を除く): 725212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 1291, 2582, 5164, 6455, 10328, 12910, 20656, 25820, 32275, 51640, 64550, 103280, 129100, 258200, 516400]

約数ペア:

[(1, 516400), (2, 258200), (4, 129100), (5, 103280), (8, 64550), (10, 51640), (16, 32275), (20, 25820), (25, 20656), (40, 12910), (50, 10328), (80, 6455), (100, 5164), (200, 2582), (400, 1291)]