20931470

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{4463}}^1$

素因数の和:4544

約数の個数: 32

約数和(自身を含む): 43711488

約数和(自身を除く): 22780018

約数列:

[1, 2, 5, 7, 10, 14, 35, 67, 70, 134, 335, 469, 670, 938, 2345, 4463, 4690, 8926, 22315, 31241, 44630, 62482, 156205, 299021, 312410, 598042, 1495105, 2093147, 2990210, 4186294, 10465735, 20931470]

約数ペア:

[(1, 20931470), (2, 10465735), (5, 4186294), (7, 2990210), (10, 2093147), (14, 1495105), (35, 598042), (67, 312410), (70, 299021), (134, 156205), (335, 62482), (469, 44630), (670, 31241), (938, 22315), (2345, 8926), (4463, 4690)]