20425888

素因数分解:

$2^5\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1361}}^1$

素因数の和:1445

約数の個数: 48

約数和(自身を含む): 46678464

約数和(自身を除く): 26252576

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 67, 112, 134, 224, 268, 469, 536, 938, 1072, 1361, 1876, 2144, 2722, 3752, 5444, 7504, 9527, 10888, 15008, 19054, 21776, 38108, 43552, 76216, 91187, 152432, 182374, 304864, 364748, 638309, 729496, 1276618, 1458992, 2553236, 2917984, 5106472, 10212944, 20425888]

約数ペア:

[(1, 20425888), (2, 10212944), (4, 5106472), (7, 2917984), (8, 2553236), (14, 1458992), (16, 1276618), (28, 729496), (32, 638309), (56, 364748), (67, 304864), (112, 182374), (134, 152432), (224, 91187), (268, 76216), (469, 43552), (536, 38108), (938, 21776), (1072, 19054), (1361, 15008), (1876, 10888), (2144, 9527), (2722, 7504), (3752, 5444)]