199291520

素因数分解:

$2^7\times 5^1\times {\mathrm{311393}}^1$

素因数の和:311412

約数の個数: 32

約数和(自身を含む): 476432820

約数和(自身を除く): 277141300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 311393, 622786, 1245572, 1556965, 2491144, 3113930, 4982288, 6227860, 9964576, 12455720, 19929152, 24911440, 39858304, 49822880, 99645760, 199291520]

約数ペア:

[(1, 199291520), (2, 99645760), (4, 49822880), (5, 39858304), (8, 24911440), (10, 19929152), (16, 12455720), (20, 9964576), (32, 6227860), (40, 4982288), (64, 3113930), (80, 2491144), (128, 1556965), (160, 1245572), (320, 622786), (640, 311393)]