640417792

素因数分解:

$2^{18}\times 7^1\times {\mathrm{349}}^1$

素因数の和:392

約数の個数: 76

約数和(自身を含む): 1468003600

約数和(自身を除く): 827585808

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 349, 448, 512, 698, 896, 1024, 1396, 1792, 2048, 2443, 2792, 3584, 4096, 4886, 5584, 7168, 8192, 9772, 11168, 14336, 16384, 19544, 22336, 28672, 32768, 39088, 44672, 57344, 65536, 78176, 89344, 114688, 131072, 156352, 178688, 229376, 262144, 312704, 357376, 458752, 625408, 714752, 917504, 1250816, 1429504, 1835008, 2501632, 2859008, 5003264, 5718016, 10006528, 11436032, 20013056, 22872064, 40026112, 45744128, 80052224, 91488256, 160104448, 320208896, 640417792]

約数ペア:

[(1, 640417792), (2, 320208896), (4, 160104448), (7, 91488256), (8, 80052224), (14, 45744128), (16, 40026112), (28, 22872064), (32, 20013056), (56, 11436032), (64, 10006528), (112, 5718016), (128, 5003264), (224, 2859008), (256, 2501632), (349, 1835008), (448, 1429504), (512, 1250816), (698, 917504), (896, 714752), (1024, 625408), (1396, 458752), (1792, 357376), (2048, 312704), (2443, 262144), (2792, 229376), (3584, 178688), (4096, 156352), (4886, 131072), (5584, 114688), (7168, 89344), (8192, 78176), (9772, 65536), (11168, 57344), (14336, 44672), (16384, 39088), (19544, 32768), (22336, 28672)]