209127980

素因数分解:

$2^2\times 5^1\times {\mathrm{1051}}^1\times {\mathrm{9949}}^1$

素因数の和:11009

約数の個数: 24

約数和(自身を含む): 439630800

約数和(自身を除く): 230502820

約数列:

[1, 2, 4, 5, 10, 20, 1051, 2102, 4204, 5255, 9949, 10510, 19898, 21020, 39796, 49745, 99490, 198980, 10456399, 20912798, 41825596, 52281995, 104563990, 209127980]

約数ペア:

[(1, 209127980), (2, 104563990), (4, 52281995), (5, 41825596), (10, 20912798), (20, 10456399), (1051, 198980), (2102, 99490), (4204, 49745), (5255, 39796), (9949, 21020), (10510, 19898)]