19783780

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5179}}^1$

素因数の和:5379

約数の個数: 24

約数和(自身を含む): 41771520

約数和(自身を除く): 21987740

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5179, 10358, 20716, 25895, 51790, 103580, 989189, 1978378, 3956756, 4945945, 9891890, 19783780]

約数ペア:

[(1, 19783780), (2, 9891890), (4, 4945945), (5, 3956756), (10, 1978378), (20, 989189), (191, 103580), (382, 51790), (764, 25895), (955, 20716), (1910, 10358), (3820, 5179)]