128540720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{271}}^1$

素因数の和:320

約数の個数: 180

約数和(自身を含む): 383537952

約数和(自身を除く): 254997232

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 121, 140, 154, 176, 196, 220, 242, 245, 271, 280, 308, 385, 392, 440, 484, 490, 539, 542, 560, 605, 616, 770, 784, 847, 880, 968, 980, 1078, 1084, 1210, 1232, 1355, 1540, 1694, 1897, 1936, 1960, 2156, 2168, 2420, 2695, 2710, 2981, 3080, 3388, 3794, 3920, 4235, 4312, 4336, 4840, 5390, 5420, 5929, 5962, 6160, 6776, 7588, 8470, 8624, 9485, 9680, 10780, 10840, 11858, 11924, 13279, 13552, 14905, 15176, 16940, 18970, 20867, 21560, 21680, 23716, 23848, 26558, 29645, 29810, 30352, 32791, 33880, 37940, 41734, 43120, 47432, 47696, 53116, 59290, 59620, 65582, 66395, 67760, 75880, 83468, 94864, 104335, 106232, 118580, 119240, 131164, 132790, 146069, 151760, 163955, 166936, 208670, 212464, 229537, 237160, 238480, 262328, 265580, 292138, 327910, 333872, 417340, 459074, 474320, 524656, 531160, 584276, 655820, 730345, 834680, 918148, 1062320, 1147685, 1168552, 1311640, 1460690, 1606759, 1669360, 1836296, 2295370, 2337104, 2623280, 2921380, 3213518, 3672592, 4590740, 5842760, 6427036, 8033795, 9181480, 11685520, 12854072, 16067590, 18362960, 25708144, 32135180, 64270360, 128540720]

約数ペア:

[(1, 128540720), (2, 64270360), (4, 32135180), (5, 25708144), (7, 18362960), (8, 16067590), (10, 12854072), (11, 11685520), (14, 9181480), (16, 8033795), (20, 6427036), (22, 5842760), (28, 4590740), (35, 3672592), (40, 3213518), (44, 2921380), (49, 2623280), (55, 2337104), (56, 2295370), (70, 1836296), (77, 1669360), (80, 1606759), (88, 1460690), (98, 1311640), (110, 1168552), (112, 1147685), (121, 1062320), (140, 918148), (154, 834680), (176, 730345), (196, 655820), (220, 584276), (242, 531160), (245, 524656), (271, 474320), (280, 459074), (308, 417340), (385, 333872), (392, 327910), (440, 292138), (484, 265580), (490, 262328), (539, 238480), (542, 237160), (560, 229537), (605, 212464), (616, 208670), (770, 166936), (784, 163955), (847, 151760), (880, 146069), (968, 132790), (980, 131164), (1078, 119240), (1084, 118580), (1210, 106232), (1232, 104335), (1355, 94864), (1540, 83468), (1694, 75880), (1897, 67760), (1936, 66395), (1960, 65582), (2156, 59620), (2168, 59290), (2420, 53116), (2695, 47696), (2710, 47432), (2981, 43120), (3080, 41734), (3388, 37940), (3794, 33880), (3920, 32791), (4235, 30352), (4312, 29810), (4336, 29645), (4840, 26558), (5390, 23848), (5420, 23716), (5929, 21680), (5962, 21560), (6160, 20867), (6776, 18970), (7588, 16940), (8470, 15176), (8624, 14905), (9485, 13552), (9680, 13279), (10780, 11924), (10840, 11858)]