257992448

素因数分解:

$2^8\times 7^2\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:318

約数の個数: 108

約数和(自身を含む): 607472712

約数和(自身を除く): 349480264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 131, 157, 196, 224, 256, 262, 314, 392, 448, 524, 628, 784, 896, 917, 1048, 1099, 1256, 1568, 1792, 1834, 2096, 2198, 2512, 3136, 3668, 4192, 4396, 5024, 6272, 6419, 7336, 7693, 8384, 8792, 10048, 12544, 12838, 14672, 15386, 16768, 17584, 20096, 20567, 25676, 29344, 30772, 33536, 35168, 40192, 41134, 51352, 58688, 61544, 70336, 82268, 102704, 117376, 123088, 140672, 143969, 164536, 205408, 234752, 246176, 281344, 287938, 329072, 410816, 492352, 575876, 658144, 821632, 984704, 1007783, 1151752, 1316288, 1643264, 1969408, 2015566, 2303504, 2632576, 4031132, 4607008, 5265152, 8062264, 9214016, 16124528, 18428032, 32249056, 36856064, 64498112, 128996224, 257992448]

約数ペア:

[(1, 257992448), (2, 128996224), (4, 64498112), (7, 36856064), (8, 32249056), (14, 18428032), (16, 16124528), (28, 9214016), (32, 8062264), (49, 5265152), (56, 4607008), (64, 4031132), (98, 2632576), (112, 2303504), (128, 2015566), (131, 1969408), (157, 1643264), (196, 1316288), (224, 1151752), (256, 1007783), (262, 984704), (314, 821632), (392, 658144), (448, 575876), (524, 492352), (628, 410816), (784, 329072), (896, 287938), (917, 281344), (1048, 246176), (1099, 234752), (1256, 205408), (1568, 164536), (1792, 143969), (1834, 140672), (2096, 123088), (2198, 117376), (2512, 102704), (3136, 82268), (3668, 70336), (4192, 61544), (4396, 58688), (5024, 51352), (6272, 41134), (6419, 40192), (7336, 35168), (7693, 33536), (8384, 30772), (8792, 29344), (10048, 25676), (12544, 20567), (12838, 20096), (14672, 17584), (15386, 16768)]