8641280

素因数分解:

$2^8\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 21314832

約数和(自身を除く): 12673552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 157, 160, 172, 215, 256, 314, 320, 344, 430, 628, 640, 688, 785, 860, 1256, 1280, 1376, 1570, 1720, 2512, 2752, 3140, 3440, 5024, 5504, 6280, 6751, 6880, 10048, 11008, 12560, 13502, 13760, 20096, 25120, 27004, 27520, 33755, 40192, 50240, 54008, 55040, 67510, 100480, 108016, 135020, 200960, 216032, 270040, 432064, 540080, 864128, 1080160, 1728256, 2160320, 4320640, 8641280]

約数ペア:

[(1, 8641280), (2, 4320640), (4, 2160320), (5, 1728256), (8, 1080160), (10, 864128), (16, 540080), (20, 432064), (32, 270040), (40, 216032), (43, 200960), (64, 135020), (80, 108016), (86, 100480), (128, 67510), (157, 55040), (160, 54008), (172, 50240), (215, 40192), (256, 33755), (314, 27520), (320, 27004), (344, 25120), (430, 20096), (628, 13760), (640, 13502), (688, 12560), (785, 11008), (860, 10048), (1256, 6880), (1280, 6751), (1376, 6280), (1570, 5504), (1720, 5024), (2512, 3440), (2752, 3140)]