209127740

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{20543}}^1$

素因数の和:21061

約数の個数: 24

約数和(自身を含む): 440052480

約数和(自身を除く): 230924740

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2036, 2545, 5090, 10180, 20543, 41086, 82172, 102715, 205430, 410860, 10456387, 20912774, 41825548, 52281935, 104563870, 209127740]

約数ペア:

[(1, 209127740), (2, 104563870), (4, 52281935), (5, 41825548), (10, 20912774), (20, 10456387), (509, 410860), (1018, 205430), (2036, 102715), (2545, 82172), (5090, 41086), (10180, 20543)]