257637120

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{397}}^1$

素因数の和:447

約数の個数: 216

約数和(自身を含む): 893236176

約数和(自身を除く): 635599056

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 169, 192, 195, 208, 240, 256, 260, 312, 320, 338, 384, 390, 397, 416, 480, 507, 520, 624, 640, 676, 768, 780, 794, 832, 845, 960, 1014, 1040, 1191, 1248, 1280, 1352, 1560, 1588, 1664, 1690, 1920, 1985, 2028, 2080, 2382, 2496, 2535, 2704, 3120, 3176, 3328, 3380, 3840, 3970, 4056, 4160, 4764, 4992, 5070, 5161, 5408, 5955, 6240, 6352, 6760, 7940, 8112, 8320, 9528, 9984, 10140, 10322, 10816, 11910, 12480, 12704, 13520, 15483, 15880, 16224, 16640, 19056, 20280, 20644, 21632, 23820, 24960, 25408, 25805, 27040, 30966, 31760, 32448, 38112, 40560, 41288, 43264, 47640, 49920, 50816, 51610, 54080, 61932, 63520, 64896, 67093, 76224, 77415, 81120, 82576, 95280, 101632, 103220, 108160, 123864, 127040, 129792, 134186, 152448, 154830, 162240, 165152, 190560, 201279, 206440, 216320, 247728, 254080, 268372, 304896, 309660, 324480, 330304, 335465, 381120, 402558, 412880, 495456, 508160, 536744, 619320, 648960, 660608, 670930, 762240, 805116, 825760, 990912, 1006395, 1073488, 1238640, 1321216, 1341860, 1524480, 1610232, 1651520, 1981824, 2012790, 2146976, 2477280, 2683720, 3220464, 3303040, 3963648, 4025580, 4293952, 4954560, 5367440, 6440928, 6606080, 8051160, 8587904, 9909120, 10734880, 12881856, 16102320, 17175808, 19818240, 21469760, 25763712, 32204640, 42939520, 51527424, 64409280, 85879040, 128818560, 257637120]

約数ペア:

[(1, 257637120), (2, 128818560), (3, 85879040), (4, 64409280), (5, 51527424), (6, 42939520), (8, 32204640), (10, 25763712), (12, 21469760), (13, 19818240), (15, 17175808), (16, 16102320), (20, 12881856), (24, 10734880), (26, 9909120), (30, 8587904), (32, 8051160), (39, 6606080), (40, 6440928), (48, 5367440), (52, 4954560), (60, 4293952), (64, 4025580), (65, 3963648), (78, 3303040), (80, 3220464), (96, 2683720), (104, 2477280), (120, 2146976), (128, 2012790), (130, 1981824), (156, 1651520), (160, 1610232), (169, 1524480), (192, 1341860), (195, 1321216), (208, 1238640), (240, 1073488), (256, 1006395), (260, 990912), (312, 825760), (320, 805116), (338, 762240), (384, 670930), (390, 660608), (397, 648960), (416, 619320), (480, 536744), (507, 508160), (520, 495456), (624, 412880), (640, 402558), (676, 381120), (768, 335465), (780, 330304), (794, 324480), (832, 309660), (845, 304896), (960, 268372), (1014, 254080), (1040, 247728), (1191, 216320), (1248, 206440), (1280, 201279), (1352, 190560), (1560, 165152), (1588, 162240), (1664, 154830), (1690, 152448), (1920, 134186), (1985, 129792), (2028, 127040), (2080, 123864), (2382, 108160), (2496, 103220), (2535, 101632), (2704, 95280), (3120, 82576), (3176, 81120), (3328, 77415), (3380, 76224), (3840, 67093), (3970, 64896), (4056, 63520), (4160, 61932), (4764, 54080), (4992, 51610), (5070, 50816), (5161, 49920), (5408, 47640), (5955, 43264), (6240, 41288), (6352, 40560), (6760, 38112), (7940, 32448), (8112, 31760), (8320, 30966), (9528, 27040), (9984, 25805), (10140, 25408), (10322, 24960), (10816, 23820), (11910, 21632), (12480, 20644), (12704, 20280), (13520, 19056), (15483, 16640), (15880, 16224)]