645987840

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{233}}^1$

素因数の和:297

約数の個数: 240

約数和(自身を含む): 2188909008

約数和(自身を除く): 1542921168

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 64, 76, 80, 95, 96, 114, 120, 128, 152, 160, 190, 192, 228, 233, 240, 256, 285, 304, 320, 361, 380, 384, 456, 466, 480, 512, 570, 608, 640, 699, 722, 760, 768, 912, 932, 960, 1083, 1140, 1165, 1216, 1280, 1398, 1444, 1520, 1536, 1805, 1824, 1864, 1920, 2166, 2280, 2330, 2432, 2560, 2796, 2888, 3040, 3495, 3610, 3648, 3728, 3840, 4332, 4427, 4560, 4660, 4864, 5415, 5592, 5776, 6080, 6990, 7220, 7296, 7456, 7680, 8664, 8854, 9120, 9320, 9728, 10830, 11184, 11552, 12160, 13281, 13980, 14440, 14592, 14912, 17328, 17708, 18240, 18640, 21660, 22135, 22368, 23104, 24320, 26562, 27960, 28880, 29184, 29824, 34656, 35416, 36480, 37280, 43320, 44270, 44736, 46208, 48640, 53124, 55920, 57760, 59648, 66405, 69312, 70832, 72960, 74560, 84113, 86640, 88540, 89472, 92416, 106248, 111840, 115520, 119296, 132810, 138624, 141664, 145920, 149120, 168226, 173280, 177080, 178944, 184832, 212496, 223680, 231040, 252339, 265620, 277248, 283328, 298240, 336452, 346560, 354160, 357888, 420565, 424992, 447360, 462080, 504678, 531240, 554496, 566656, 596480, 672904, 693120, 708320, 841130, 849984, 894720, 924160, 1009356, 1062480, 1133312, 1261695, 1345808, 1386240, 1416640, 1682260, 1699968, 1789440, 2018712, 2124960, 2266624, 2523390, 2691616, 2772480, 2833280, 3364520, 3399936, 4037424, 4249920, 5046780, 5383232, 5666560, 6729040, 6799872, 8074848, 8499840, 10093560, 10766464, 11333120, 13458080, 16149696, 16999680, 20187120, 21532928, 26916160, 32299392, 33999360, 40374240, 43065856, 53832320, 64598784, 80748480, 107664640, 129197568, 161496960, 215329280, 322993920, 645987840]

約数ペア:

[(1, 645987840), (2, 322993920), (3, 215329280), (4, 161496960), (5, 129197568), (6, 107664640), (8, 80748480), (10, 64598784), (12, 53832320), (15, 43065856), (16, 40374240), (19, 33999360), (20, 32299392), (24, 26916160), (30, 21532928), (32, 20187120), (38, 16999680), (40, 16149696), (48, 13458080), (57, 11333120), (60, 10766464), (64, 10093560), (76, 8499840), (80, 8074848), (95, 6799872), (96, 6729040), (114, 5666560), (120, 5383232), (128, 5046780), (152, 4249920), (160, 4037424), (190, 3399936), (192, 3364520), (228, 2833280), (233, 2772480), (240, 2691616), (256, 2523390), (285, 2266624), (304, 2124960), (320, 2018712), (361, 1789440), (380, 1699968), (384, 1682260), (456, 1416640), (466, 1386240), (480, 1345808), (512, 1261695), (570, 1133312), (608, 1062480), (640, 1009356), (699, 924160), (722, 894720), (760, 849984), (768, 841130), (912, 708320), (932, 693120), (960, 672904), (1083, 596480), (1140, 566656), (1165, 554496), (1216, 531240), (1280, 504678), (1398, 462080), (1444, 447360), (1520, 424992), (1536, 420565), (1805, 357888), (1824, 354160), (1864, 346560), (1920, 336452), (2166, 298240), (2280, 283328), (2330, 277248), (2432, 265620), (2560, 252339), (2796, 231040), (2888, 223680), (3040, 212496), (3495, 184832), (3610, 178944), (3648, 177080), (3728, 173280), (3840, 168226), (4332, 149120), (4427, 145920), (4560, 141664), (4660, 138624), (4864, 132810), (5415, 119296), (5592, 115520), (5776, 111840), (6080, 106248), (6990, 92416), (7220, 89472), (7296, 88540), (7456, 86640), (7680, 84113), (8664, 74560), (8854, 72960), (9120, 70832), (9320, 69312), (9728, 66405), (10830, 59648), (11184, 57760), (11552, 55920), (12160, 53124), (13281, 48640), (13980, 46208), (14440, 44736), (14592, 44270), (14912, 43320), (17328, 37280), (17708, 36480), (18240, 35416), (18640, 34656), (21660, 29824), (22135, 29184), (22368, 28880), (23104, 27960), (24320, 26562)]