199396480

素因数分解:

$2^7\times 5^1\times {\mathrm{311557}}^1$

素因数の和:311576

約数の個数: 32

約数和(自身を含む): 476683740

約数和(自身を除く): 277287260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 311557, 623114, 1246228, 1557785, 2492456, 3115570, 4984912, 6231140, 9969824, 12462280, 19939648, 24924560, 39879296, 49849120, 99698240, 199396480]

約数ペア:

[(1, 199396480), (2, 99698240), (4, 49849120), (5, 39879296), (8, 24924560), (10, 19939648), (16, 12462280), (20, 9969824), (32, 6231140), (40, 4984912), (64, 3115570), (80, 2492456), (128, 1557785), (160, 1246228), (320, 623114), (640, 311557)]