19744000

素因数分解:

$2^8\times 5^3\times {\mathrm{617}}^1$

素因数の和:648

約数の個数: 72

約数和(自身を含む): 49264488

約数和(自身を除く): 29520488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 617, 640, 800, 1000, 1234, 1280, 1600, 2000, 2468, 3085, 3200, 4000, 4936, 6170, 6400, 8000, 9872, 12340, 15425, 16000, 19744, 24680, 30850, 32000, 39488, 49360, 61700, 77125, 78976, 98720, 123400, 154250, 157952, 197440, 246800, 308500, 394880, 493600, 617000, 789760, 987200, 1234000, 1974400, 2468000, 3948800, 4936000, 9872000, 19744000]

約数ペア:

[(1, 19744000), (2, 9872000), (4, 4936000), (5, 3948800), (8, 2468000), (10, 1974400), (16, 1234000), (20, 987200), (25, 789760), (32, 617000), (40, 493600), (50, 394880), (64, 308500), (80, 246800), (100, 197440), (125, 157952), (128, 154250), (160, 123400), (200, 98720), (250, 78976), (256, 77125), (320, 61700), (400, 49360), (500, 39488), (617, 32000), (640, 30850), (800, 24680), (1000, 19744), (1234, 16000), (1280, 15425), (1600, 12340), (2000, 9872), (2468, 8000), (3085, 6400), (3200, 6170), (4000, 4936)]