139520

素因数分解:

$2^8\times 5^1\times {\mathrm{109}}^1$

素因数の和:130

約数の個数: 36

約数和(自身を含む): 337260

約数和(自身を除く): 197740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 128, 160, 218, 256, 320, 436, 545, 640, 872, 1090, 1280, 1744, 2180, 3488, 4360, 6976, 8720, 13952, 17440, 27904, 34880, 69760, 139520]

約数ペア:

[(1, 139520), (2, 69760), (4, 34880), (5, 27904), (8, 17440), (10, 13952), (16, 8720), (20, 6976), (32, 4360), (40, 3488), (64, 2180), (80, 1744), (109, 1280), (128, 1090), (160, 872), (218, 640), (256, 545), (320, 436)]