219902720

素因数分解:

$2^8\times 5^1\times {\mathrm{171799}}^1$

素因数の和:171820

約数の個数: 36

約数和(自身を含む): 526738800

約数和(自身を除く): 306836080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 171799, 343598, 687196, 858995, 1374392, 1717990, 2748784, 3435980, 5497568, 6871960, 10995136, 13743920, 21990272, 27487840, 43980544, 54975680, 109951360, 219902720]

約数ペア:

[(1, 219902720), (2, 109951360), (4, 54975680), (5, 43980544), (8, 27487840), (10, 21990272), (16, 13743920), (20, 10995136), (32, 6871960), (40, 5497568), (64, 3435980), (80, 2748784), (128, 1717990), (160, 1374392), (256, 858995), (320, 687196), (640, 343598), (1280, 171799)]