20787748

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{6361}}^1$

素因数の和:6427

約数の個数: 24

約数和(自身を含む): 39189920

約数和(自身を除く): 18402172

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 172, 817, 1634, 3268, 6361, 12722, 25444, 120859, 241718, 273523, 483436, 547046, 1094092, 5196937, 10393874, 20787748]

約数ペア:

[(1, 20787748), (2, 10393874), (4, 5196937), (19, 1094092), (38, 547046), (43, 483436), (76, 273523), (86, 241718), (172, 120859), (817, 25444), (1634, 12722), (3268, 6361)]