20605600

素因数分解:

$2^5\times 5^2\times {\mathrm{43}}^1\times {\mathrm{599}}^1$

素因数の和:662

約数の個数: 72

約数和(自身を含む): 51559200

約数和(自身を除く): 30953600

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, 599, 688, 800, 860, 1075, 1198, 1376, 1720, 2150, 2396, 2995, 3440, 4300, 4792, 5990, 6880, 8600, 9584, 11980, 14975, 17200, 19168, 23960, 25757, 29950, 34400, 47920, 51514, 59900, 95840, 103028, 119800, 128785, 206056, 239600, 257570, 412112, 479200, 515140, 643925, 824224, 1030280, 1287850, 2060560, 2575700, 4121120, 5151400, 10302800, 20605600]

約数ペア:

[(1, 20605600), (2, 10302800), (4, 5151400), (5, 4121120), (8, 2575700), (10, 2060560), (16, 1287850), (20, 1030280), (25, 824224), (32, 643925), (40, 515140), (43, 479200), (50, 412112), (80, 257570), (86, 239600), (100, 206056), (160, 128785), (172, 119800), (200, 103028), (215, 95840), (344, 59900), (400, 51514), (430, 47920), (599, 34400), (688, 29950), (800, 25757), (860, 23960), (1075, 19168), (1198, 17200), (1376, 14975), (1720, 11980), (2150, 9584), (2396, 8600), (2995, 6880), (3440, 5990), (4300, 4792)]