256738560

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:213

約数の個数: 288

約数和(自身を含む): 913422720

約数和(自身を除く): 656684160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 37, 39, 40, 48, 52, 60, 64, 65, 74, 78, 80, 96, 104, 111, 120, 128, 130, 139, 148, 156, 160, 185, 192, 195, 208, 222, 240, 256, 260, 278, 296, 312, 320, 370, 384, 390, 416, 417, 444, 480, 481, 520, 555, 556, 592, 624, 640, 695, 740, 768, 780, 832, 834, 888, 960, 962, 1040, 1110, 1112, 1184, 1248, 1280, 1390, 1443, 1480, 1560, 1664, 1668, 1776, 1807, 1920, 1924, 2080, 2085, 2220, 2224, 2368, 2405, 2496, 2780, 2886, 2960, 3120, 3328, 3336, 3552, 3614, 3840, 3848, 4160, 4170, 4440, 4448, 4736, 4810, 4992, 5143, 5421, 5560, 5772, 5920, 6240, 6672, 7104, 7215, 7228, 7696, 8320, 8340, 8880, 8896, 9035, 9472, 9620, 9984, 10286, 10842, 11120, 11544, 11840, 12480, 13344, 14208, 14430, 14456, 15392, 15429, 16640, 16680, 17760, 17792, 18070, 19240, 20572, 21684, 22240, 23088, 23680, 24960, 25715, 26688, 27105, 28416, 28860, 28912, 30784, 30858, 33360, 35520, 35584, 36140, 38480, 41144, 43368, 44480, 46176, 47360, 49920, 51430, 53376, 54210, 57720, 57824, 61568, 61716, 66720, 66859, 71040, 72280, 76960, 77145, 82288, 86736, 88960, 92352, 102860, 106752, 108420, 115440, 115648, 123136, 123432, 133440, 133718, 142080, 144560, 153920, 154290, 164576, 173472, 177920, 184704, 200577, 205720, 216840, 230880, 231296, 246864, 266880, 267436, 289120, 307840, 308580, 329152, 334295, 346944, 369408, 401154, 411440, 433680, 461760, 462592, 493728, 533760, 534872, 578240, 615680, 617160, 658304, 668590, 693888, 802308, 822880, 867360, 923520, 987456, 1002885, 1069744, 1156480, 1234320, 1316608, 1337180, 1387776, 1604616, 1645760, 1734720, 1847040, 1974912, 2005770, 2139488, 2312960, 2468640, 2674360, 3209232, 3291520, 3469440, 3949824, 4011540, 4278976, 4937280, 5348720, 6418464, 6583040, 6938880, 8023080, 8557952, 9874560, 10697440, 12836928, 16046160, 17115904, 19749120, 21394880, 25673856, 32092320, 42789760, 51347712, 64184640, 85579520, 128369280, 256738560]

約数ペア:

[(1, 256738560), (2, 128369280), (3, 85579520), (4, 64184640), (5, 51347712), (6, 42789760), (8, 32092320), (10, 25673856), (12, 21394880), (13, 19749120), (15, 17115904), (16, 16046160), (20, 12836928), (24, 10697440), (26, 9874560), (30, 8557952), (32, 8023080), (37, 6938880), (39, 6583040), (40, 6418464), (48, 5348720), (52, 4937280), (60, 4278976), (64, 4011540), (65, 3949824), (74, 3469440), (78, 3291520), (80, 3209232), (96, 2674360), (104, 2468640), (111, 2312960), (120, 2139488), (128, 2005770), (130, 1974912), (139, 1847040), (148, 1734720), (156, 1645760), (160, 1604616), (185, 1387776), (192, 1337180), (195, 1316608), (208, 1234320), (222, 1156480), (240, 1069744), (256, 1002885), (260, 987456), (278, 923520), (296, 867360), (312, 822880), (320, 802308), (370, 693888), (384, 668590), (390, 658304), (416, 617160), (417, 615680), (444, 578240), (480, 534872), (481, 533760), (520, 493728), (555, 462592), (556, 461760), (592, 433680), (624, 411440), (640, 401154), (695, 369408), (740, 346944), (768, 334295), (780, 329152), (832, 308580), (834, 307840), (888, 289120), (960, 267436), (962, 266880), (1040, 246864), (1110, 231296), (1112, 230880), (1184, 216840), (1248, 205720), (1280, 200577), (1390, 184704), (1443, 177920), (1480, 173472), (1560, 164576), (1664, 154290), (1668, 153920), (1776, 144560), (1807, 142080), (1920, 133718), (1924, 133440), (2080, 123432), (2085, 123136), (2220, 115648), (2224, 115440), (2368, 108420), (2405, 106752), (2496, 102860), (2780, 92352), (2886, 88960), (2960, 86736), (3120, 82288), (3328, 77145), (3336, 76960), (3552, 72280), (3614, 71040), (3840, 66859), (3848, 66720), (4160, 61716), (4170, 61568), (4440, 57824), (4448, 57720), (4736, 54210), (4810, 53376), (4992, 51430), (5143, 49920), (5421, 47360), (5560, 46176), (5772, 44480), (5920, 43368), (6240, 41144), (6672, 38480), (7104, 36140), (7215, 35584), (7228, 35520), (7696, 33360), (8320, 30858), (8340, 30784), (8880, 28912), (8896, 28860), (9035, 28416), (9472, 27105), (9620, 26688), (9984, 25715), (10286, 24960), (10842, 23680), (11120, 23088), (11544, 22240), (11840, 21684), (12480, 20572), (13344, 19240), (14208, 18070), (14430, 17792), (14456, 17760), (15392, 16680), (15429, 16640)]