640135440

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{42337}}^1$

素因数の和:42366

約数の個数: 160

約数和(自身を含む): 2519957760

約数和(自身を除く): 1879822320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1512, 1680, 1890, 2160, 2520, 3024, 3780, 5040, 7560, 15120, 42337, 84674, 127011, 169348, 211685, 254022, 296359, 338696, 381033, 423370, 508044, 592718, 635055, 677392, 762066, 846740, 889077, 1016088, 1143099, 1185436, 1270110, 1481795, 1524132, 1693480, 1778154, 1905165, 2032176, 2286198, 2370872, 2540220, 2667231, 2963590, 3048264, 3386960, 3556308, 3810330, 4445385, 4572396, 4741744, 5080440, 5334462, 5715495, 5927180, 6096528, 7112616, 7620660, 8001693, 8890770, 9144792, 10160880, 10668924, 11430990, 11854360, 13336155, 14225232, 15241320, 16003386, 17781540, 18289584, 21337848, 22861980, 23708720, 26672310, 30482640, 32006772, 35563080, 40008465, 42675696, 45723960, 53344620, 64013544, 71126160, 80016930, 91447920, 106689240, 128027088, 160033860, 213378480, 320067720, 640135440]

約数ペア:

[(1, 640135440), (2, 320067720), (3, 213378480), (4, 160033860), (5, 128027088), (6, 106689240), (7, 91447920), (8, 80016930), (9, 71126160), (10, 64013544), (12, 53344620), (14, 45723960), (15, 42675696), (16, 40008465), (18, 35563080), (20, 32006772), (21, 30482640), (24, 26672310), (27, 23708720), (28, 22861980), (30, 21337848), (35, 18289584), (36, 17781540), (40, 16003386), (42, 15241320), (45, 14225232), (48, 13336155), (54, 11854360), (56, 11430990), (60, 10668924), (63, 10160880), (70, 9144792), (72, 8890770), (80, 8001693), (84, 7620660), (90, 7112616), (105, 6096528), (108, 5927180), (112, 5715495), (120, 5334462), (126, 5080440), (135, 4741744), (140, 4572396), (144, 4445385), (168, 3810330), (180, 3556308), (189, 3386960), (210, 3048264), (216, 2963590), (240, 2667231), (252, 2540220), (270, 2370872), (280, 2286198), (315, 2032176), (336, 1905165), (360, 1778154), (378, 1693480), (420, 1524132), (432, 1481795), (504, 1270110), (540, 1185436), (560, 1143099), (630, 1016088), (720, 889077), (756, 846740), (840, 762066), (945, 677392), (1008, 635055), (1080, 592718), (1260, 508044), (1512, 423370), (1680, 381033), (1890, 338696), (2160, 296359), (2520, 254022), (3024, 211685), (3780, 169348), (5040, 127011), (7560, 84674), (15120, 42337)]