4320640

素因数分解:

$2^7\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:219

約数の個数: 64

約数和(自身を含む): 10636560

約数和(自身を除く): 6315920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 157, 160, 172, 215, 314, 320, 344, 430, 628, 640, 688, 785, 860, 1256, 1376, 1570, 1720, 2512, 2752, 3140, 3440, 5024, 5504, 6280, 6751, 6880, 10048, 12560, 13502, 13760, 20096, 25120, 27004, 27520, 33755, 50240, 54008, 67510, 100480, 108016, 135020, 216032, 270040, 432064, 540080, 864128, 1080160, 2160320, 4320640]

約数ペア:

[(1, 4320640), (2, 2160320), (4, 1080160), (5, 864128), (8, 540080), (10, 432064), (16, 270040), (20, 216032), (32, 135020), (40, 108016), (43, 100480), (64, 67510), (80, 54008), (86, 50240), (128, 33755), (157, 27520), (160, 27004), (172, 25120), (215, 20096), (314, 13760), (320, 13502), (344, 12560), (430, 10048), (628, 6880), (640, 6751), (688, 6280), (785, 5504), (860, 5024), (1256, 3440), (1376, 3140), (1570, 2752), (1720, 2512)]