19780070

素因数分解:

$2^1\times 5^1\times {\mathrm{937}}^1\times {\mathrm{2111}}^1$

素因数の和:3055

約数の個数: 16

約数和(自身を含む): 35659008

約数和(自身を除く): 15878938

約数列:

[1, 2, 5, 10, 937, 1874, 2111, 4222, 4685, 9370, 10555, 21110, 1978007, 3956014, 9890035, 19780070]

約数ペア:

[(1, 19780070), (2, 9890035), (5, 3956014), (10, 1978007), (937, 21110), (1874, 10555), (2111, 9370), (4222, 4685)]