19980016

素因数分解:

$2^4\times 7^1\times {\mathrm{178393}}^1$

素因数の和:178408

約数の個数: 20

約数和(自身を含む): 44241712

約数和(自身を除く): 24261696

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 178393, 356786, 713572, 1248751, 1427144, 2497502, 2854288, 4995004, 9990008, 19980016]

約数ペア:

[(1, 19980016), (2, 9990008), (4, 4995004), (7, 2854288), (8, 2497502), (14, 1427144), (16, 1248751), (28, 713572), (56, 356786), (112, 178393)]