20544478

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{1103}}^1$

素因数の和:1311

約数の個数: 16

約数和(自身を含む): 31530240

約数和(自身を除く): 10985762

約数列:

[1, 2, 67, 134, 139, 278, 1103, 2206, 9313, 18626, 73901, 147802, 153317, 306634, 10272239, 20544478]

約数ペア:

[(1, 20544478), (2, 10272239), (67, 306634), (134, 153317), (139, 147802), (278, 73901), (1103, 18626), (2206, 9313)]