20180408

素因数分解:

$2^3\times {\mathrm{331}}^1\times {\mathrm{7621}}^1$

素因数の和:7958

約数の個数: 16

約数和(自身を含む): 37957560

約数和(自身を除く): 17777152

約数列:

[1, 2, 4, 8, 331, 662, 1324, 2648, 7621, 15242, 30484, 60968, 2522551, 5045102, 10090204, 20180408]

約数ペア:

[(1, 20180408), (2, 10090204), (4, 5045102), (8, 2522551), (331, 60968), (662, 30484), (1324, 15242), (2648, 7621)]