20018878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{39563}}^1$

素因数の和:39599

約数の個数: 16

約数和(自身を含む): 34183296

約数和(自身を除く): 14164418

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 39563, 79126, 435193, 870386, 909949, 1819898, 10009439, 20018878]

約数ペア:

[(1, 20018878), (2, 10009439), (11, 1819898), (22, 909949), (23, 870386), (46, 435193), (253, 79126), (506, 39563)]