21338740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{62761}}^1$

素因数の和:62787

約数の個数: 24

約数和(自身を含む): 47448072

約数和(自身を除く): 26109332

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 62761, 125522, 251044, 313805, 627610, 1066937, 1255220, 2133874, 4267748, 5334685, 10669370, 21338740]

約数ペア:

[(1, 21338740), (2, 10669370), (4, 5334685), (5, 4267748), (10, 2133874), (17, 1255220), (20, 1066937), (34, 627610), (68, 313805), (85, 251044), (170, 125522), (340, 62761)]