257765248

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:340

約数の個数: 128

約数和(自身を含む): 603187200

約数和(自身を除く): 345421952

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 31, 32, 38, 52, 62, 64, 76, 104, 124, 128, 152, 208, 247, 248, 263, 304, 403, 416, 494, 496, 526, 589, 608, 806, 832, 988, 992, 1052, 1178, 1216, 1612, 1664, 1976, 1984, 2104, 2356, 2432, 3224, 3419, 3952, 3968, 4208, 4712, 4997, 6448, 6838, 7657, 7904, 8153, 8416, 9424, 9994, 12896, 13676, 15314, 15808, 16306, 16832, 18848, 19988, 25792, 27352, 30628, 31616, 32612, 33664, 37696, 39976, 51584, 54704, 61256, 64961, 65224, 75392, 79952, 105989, 109408, 122512, 129922, 130448, 154907, 159904, 211978, 218816, 245024, 259844, 260896, 309814, 319808, 423956, 437632, 490048, 519688, 521792, 619628, 639616, 847912, 980096, 1039376, 1043584, 1239256, 1695824, 2013791, 2078752, 2478512, 3391648, 4027582, 4157504, 4957024, 6783296, 8055164, 8315008, 9914048, 13566592, 16110328, 19828096, 32220656, 64441312, 128882624, 257765248]

約数ペア:

[(1, 257765248), (2, 128882624), (4, 64441312), (8, 32220656), (13, 19828096), (16, 16110328), (19, 13566592), (26, 9914048), (31, 8315008), (32, 8055164), (38, 6783296), (52, 4957024), (62, 4157504), (64, 4027582), (76, 3391648), (104, 2478512), (124, 2078752), (128, 2013791), (152, 1695824), (208, 1239256), (247, 1043584), (248, 1039376), (263, 980096), (304, 847912), (403, 639616), (416, 619628), (494, 521792), (496, 519688), (526, 490048), (589, 437632), (608, 423956), (806, 319808), (832, 309814), (988, 260896), (992, 259844), (1052, 245024), (1178, 218816), (1216, 211978), (1612, 159904), (1664, 154907), (1976, 130448), (1984, 129922), (2104, 122512), (2356, 109408), (2432, 105989), (3224, 79952), (3419, 75392), (3952, 65224), (3968, 64961), (4208, 61256), (4712, 54704), (4997, 51584), (6448, 39976), (6838, 37696), (7657, 33664), (7904, 32612), (8153, 31616), (8416, 30628), (9424, 27352), (9994, 25792), (12896, 19988), (13676, 18848), (15314, 16832), (15808, 16306)]