256389280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{269}}^1$

素因数の和:351

約数の個数: 192

約数和(自身を含む): 744629760

約数和(自身を除く): 488240480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 37, 40, 46, 56, 70, 74, 80, 92, 112, 115, 140, 148, 160, 161, 184, 185, 224, 230, 259, 269, 280, 296, 322, 368, 370, 460, 518, 538, 560, 592, 644, 736, 740, 805, 851, 920, 1036, 1076, 1120, 1184, 1288, 1295, 1345, 1480, 1610, 1702, 1840, 1883, 2072, 2152, 2576, 2590, 2690, 2960, 3220, 3404, 3680, 3766, 4144, 4255, 4304, 5152, 5180, 5380, 5920, 5957, 6187, 6440, 6808, 7532, 8288, 8510, 8608, 9415, 9953, 10360, 10760, 11914, 12374, 12880, 13616, 15064, 17020, 18830, 19906, 20720, 21520, 23828, 24748, 25760, 27232, 29785, 30128, 30935, 34040, 37660, 39812, 41440, 43040, 43309, 47656, 49496, 49765, 59570, 60256, 61870, 68080, 69671, 75320, 79624, 86618, 95312, 98992, 99530, 119140, 123740, 136160, 139342, 150640, 159248, 173236, 190624, 197984, 199060, 216545, 228919, 238280, 247480, 278684, 301280, 318496, 346472, 348355, 398120, 433090, 457838, 476560, 494960, 557368, 692944, 696710, 796240, 866180, 915676, 953120, 989920, 1114736, 1144595, 1385888, 1393420, 1592480, 1602433, 1732360, 1831352, 2229472, 2289190, 2786840, 3204866, 3464720, 3662704, 4578380, 5573680, 6409732, 6929440, 7325408, 8012165, 9156760, 11147360, 12819464, 16024330, 18313520, 25638928, 32048660, 36627040, 51277856, 64097320, 128194640, 256389280]

約数ペア:

[(1, 256389280), (2, 128194640), (4, 64097320), (5, 51277856), (7, 36627040), (8, 32048660), (10, 25638928), (14, 18313520), (16, 16024330), (20, 12819464), (23, 11147360), (28, 9156760), (32, 8012165), (35, 7325408), (37, 6929440), (40, 6409732), (46, 5573680), (56, 4578380), (70, 3662704), (74, 3464720), (80, 3204866), (92, 2786840), (112, 2289190), (115, 2229472), (140, 1831352), (148, 1732360), (160, 1602433), (161, 1592480), (184, 1393420), (185, 1385888), (224, 1144595), (230, 1114736), (259, 989920), (269, 953120), (280, 915676), (296, 866180), (322, 796240), (368, 696710), (370, 692944), (460, 557368), (518, 494960), (538, 476560), (560, 457838), (592, 433090), (644, 398120), (736, 348355), (740, 346472), (805, 318496), (851, 301280), (920, 278684), (1036, 247480), (1076, 238280), (1120, 228919), (1184, 216545), (1288, 199060), (1295, 197984), (1345, 190624), (1480, 173236), (1610, 159248), (1702, 150640), (1840, 139342), (1883, 136160), (2072, 123740), (2152, 119140), (2576, 99530), (2590, 98992), (2690, 95312), (2960, 86618), (3220, 79624), (3404, 75320), (3680, 69671), (3766, 68080), (4144, 61870), (4255, 60256), (4304, 59570), (5152, 49765), (5180, 49496), (5380, 47656), (5920, 43309), (5957, 43040), (6187, 41440), (6440, 39812), (6808, 37660), (7532, 34040), (8288, 30935), (8510, 30128), (8608, 29785), (9415, 27232), (9953, 25760), (10360, 24748), (10760, 23828), (11914, 21520), (12374, 20720), (12880, 19906), (13616, 18830), (15064, 17020)]