880640

素因数分解:

$2^{12}\times 5^1\times {\mathrm{43}}^1$

素因数の和:72

約数の個数: 52

約数和(自身を含む): 2162424

約数和(自身を除く): 1281784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 256, 320, 344, 430, 512, 640, 688, 860, 1024, 1280, 1376, 1720, 2048, 2560, 2752, 3440, 4096, 5120, 5504, 6880, 10240, 11008, 13760, 20480, 22016, 27520, 44032, 55040, 88064, 110080, 176128, 220160, 440320, 880640]

約数ペア:

[(1, 880640), (2, 440320), (4, 220160), (5, 176128), (8, 110080), (10, 88064), (16, 55040), (20, 44032), (32, 27520), (40, 22016), (43, 20480), (64, 13760), (80, 11008), (86, 10240), (128, 6880), (160, 5504), (172, 5120), (215, 4096), (256, 3440), (320, 2752), (344, 2560), (430, 2048), (512, 1720), (640, 1376), (688, 1280), (860, 1024)]