278921216

素因数分解:

$2^{21}\times 7^1\times {\mathrm{19}}^1$

素因数の和:68

約数の個数: 88

約数和(自身を含む): 671088480

約数和(自身を除く): 392167264

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 64, 76, 112, 128, 133, 152, 224, 256, 266, 304, 448, 512, 532, 608, 896, 1024, 1064, 1216, 1792, 2048, 2128, 2432, 3584, 4096, 4256, 4864, 7168, 8192, 8512, 9728, 14336, 16384, 17024, 19456, 28672, 32768, 34048, 38912, 57344, 65536, 68096, 77824, 114688, 131072, 136192, 155648, 229376, 262144, 272384, 311296, 458752, 524288, 544768, 622592, 917504, 1048576, 1089536, 1245184, 1835008, 2097152, 2179072, 2490368, 3670016, 4358144, 4980736, 7340032, 8716288, 9961472, 14680064, 17432576, 19922944, 34865152, 39845888, 69730304, 139460608, 278921216]

約数ペア:

[(1, 278921216), (2, 139460608), (4, 69730304), (7, 39845888), (8, 34865152), (14, 19922944), (16, 17432576), (19, 14680064), (28, 9961472), (32, 8716288), (38, 7340032), (56, 4980736), (64, 4358144), (76, 3670016), (112, 2490368), (128, 2179072), (133, 2097152), (152, 1835008), (224, 1245184), (256, 1089536), (266, 1048576), (304, 917504), (448, 622592), (512, 544768), (532, 524288), (608, 458752), (896, 311296), (1024, 272384), (1064, 262144), (1216, 229376), (1792, 155648), (2048, 136192), (2128, 131072), (2432, 114688), (3584, 77824), (4096, 68096), (4256, 65536), (4864, 57344), (7168, 38912), (8192, 34048), (8512, 32768), (9728, 28672), (14336, 19456), (16384, 17024)]