19778080

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{17659}}^1$

素因数の和:17681

約数の個数: 48

約数和(自身を含む): 53403840

約数和(自身を除く): 33625760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 17659, 35318, 70636, 88295, 123613, 141272, 176590, 247226, 282544, 353180, 494452, 565088, 618065, 706360, 988904, 1236130, 1412720, 1977808, 2472260, 2825440, 3955616, 4944520, 9889040, 19778080]

約数ペア:

[(1, 19778080), (2, 9889040), (4, 4944520), (5, 3955616), (7, 2825440), (8, 2472260), (10, 1977808), (14, 1412720), (16, 1236130), (20, 988904), (28, 706360), (32, 618065), (35, 565088), (40, 494452), (56, 353180), (70, 282544), (80, 247226), (112, 176590), (140, 141272), (160, 123613), (224, 88295), (280, 70636), (560, 35318), (1120, 17659)]