19523720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11351}}^1$

素因数の和:11405

約数の個数: 32

約数和(自身を含む): 44953920

約数和(自身を除く): 25430200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11351, 22702, 45404, 56755, 90808, 113510, 227020, 454040, 488093, 976186, 1952372, 2440465, 3904744, 4880930, 9761860, 19523720]

約数ペア:

[(1, 19523720), (2, 9761860), (4, 4880930), (5, 3904744), (8, 2440465), (10, 1952372), (20, 976186), (40, 488093), (43, 454040), (86, 227020), (172, 113510), (215, 90808), (344, 56755), (430, 45404), (860, 22702), (1720, 11351)]