20915608

素因数分解:

$2^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2687}}^1$

素因数の和:2839

約数の個数: 32

約数和(自身を含む): 45158400

約数和(自身を除く): 24242792

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 139, 278, 556, 973, 1112, 1946, 2687, 3892, 5374, 7784, 10748, 18809, 21496, 37618, 75236, 150472, 373493, 746986, 1493972, 2614451, 2987944, 5228902, 10457804, 20915608]

約数ペア:

[(1, 20915608), (2, 10457804), (4, 5228902), (7, 2987944), (8, 2614451), (14, 1493972), (28, 746986), (56, 373493), (139, 150472), (278, 75236), (556, 37618), (973, 21496), (1112, 18809), (1946, 10748), (2687, 7784), (3892, 5374)]