21224800

素因数分解:

$2^5\times 5^2\times {\mathrm{43}}^1\times {\mathrm{617}}^1$

素因数の和:680

約数の個数: 72

約数和(自身を含む): 53105976

約数和(自身を除く): 31881176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 43, 50, 80, 86, 100, 160, 172, 200, 215, 344, 400, 430, 617, 688, 800, 860, 1075, 1234, 1376, 1720, 2150, 2468, 3085, 3440, 4300, 4936, 6170, 6880, 8600, 9872, 12340, 15425, 17200, 19744, 24680, 26531, 30850, 34400, 49360, 53062, 61700, 98720, 106124, 123400, 132655, 212248, 246800, 265310, 424496, 493600, 530620, 663275, 848992, 1061240, 1326550, 2122480, 2653100, 4244960, 5306200, 10612400, 21224800]

約数ペア:

[(1, 21224800), (2, 10612400), (4, 5306200), (5, 4244960), (8, 2653100), (10, 2122480), (16, 1326550), (20, 1061240), (25, 848992), (32, 663275), (40, 530620), (43, 493600), (50, 424496), (80, 265310), (86, 246800), (100, 212248), (160, 132655), (172, 123400), (200, 106124), (215, 98720), (344, 61700), (400, 53062), (430, 49360), (617, 34400), (688, 30850), (800, 26531), (860, 24680), (1075, 19744), (1234, 17200), (1376, 15425), (1720, 12340), (2150, 9872), (2468, 8600), (3085, 6880), (3440, 6170), (4300, 4936)]