21040512

素因数分解:

$2^7\times 3^1\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:523

約数の個数: 64

約数和(自身を含む): 56406000

約数和(自身を除く): 35365488

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 157, 192, 314, 349, 384, 471, 628, 698, 942, 1047, 1256, 1396, 1884, 2094, 2512, 2792, 3768, 4188, 5024, 5584, 7536, 8376, 10048, 11168, 15072, 16752, 20096, 22336, 30144, 33504, 44672, 54793, 60288, 67008, 109586, 134016, 164379, 219172, 328758, 438344, 657516, 876688, 1315032, 1753376, 2630064, 3506752, 5260128, 7013504, 10520256, 21040512]

約数ペア:

[(1, 21040512), (2, 10520256), (3, 7013504), (4, 5260128), (6, 3506752), (8, 2630064), (12, 1753376), (16, 1315032), (24, 876688), (32, 657516), (48, 438344), (64, 328758), (96, 219172), (128, 164379), (157, 134016), (192, 109586), (314, 67008), (349, 60288), (384, 54793), (471, 44672), (628, 33504), (698, 30144), (942, 22336), (1047, 20096), (1256, 16752), (1396, 15072), (1884, 11168), (2094, 10048), (2512, 8376), (2792, 7536), (3768, 5584), (4188, 5024)]