261781520

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{467}}^1$

素因数の和:518

約数の個数: 240

約数和(自身を含む): 833571648

約数和(自身を除く): 571790128

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 35, 40, 44, 49, 52, 55, 56, 65, 70, 77, 80, 88, 91, 98, 104, 110, 112, 130, 140, 143, 154, 176, 182, 196, 208, 220, 245, 260, 280, 286, 308, 364, 385, 392, 440, 455, 467, 490, 520, 539, 560, 572, 616, 637, 715, 728, 770, 784, 880, 910, 934, 980, 1001, 1040, 1078, 1144, 1232, 1274, 1430, 1456, 1540, 1820, 1868, 1960, 2002, 2156, 2288, 2335, 2548, 2695, 2860, 3080, 3185, 3269, 3640, 3736, 3920, 4004, 4312, 4670, 5005, 5096, 5137, 5390, 5720, 6071, 6160, 6370, 6538, 7007, 7280, 7472, 8008, 8624, 9340, 10010, 10192, 10274, 10780, 11440, 12142, 12740, 13076, 14014, 16016, 16345, 18680, 20020, 20548, 21560, 22883, 24284, 25480, 25685, 26152, 28028, 30355, 32690, 35035, 35959, 37360, 40040, 41096, 42497, 43120, 45766, 48568, 50960, 51370, 52304, 56056, 60710, 65380, 66781, 70070, 71918, 80080, 82192, 84994, 91532, 97136, 102740, 112112, 114415, 121420, 130760, 133562, 140140, 143836, 169988, 179795, 183064, 205480, 212485, 228830, 242840, 251713, 261520, 267124, 280280, 287672, 297479, 333905, 339976, 359590, 366128, 410960, 424970, 457660, 467467, 485680, 503426, 534248, 560560, 575344, 594958, 667810, 679952, 719180, 849940, 915320, 934934, 1006852, 1068496, 1189916, 1258565, 1335620, 1438360, 1487395, 1699880, 1830640, 1869868, 2013704, 2337335, 2379832, 2517130, 2671240, 2876720, 2974790, 3272269, 3399760, 3739736, 4027408, 4674670, 4759664, 5034260, 5342480, 5949580, 6544538, 7479472, 9349340, 10068520, 11899160, 13089076, 16361345, 18698680, 20137040, 23798320, 26178152, 32722690, 37397360, 52356304, 65445380, 130890760, 261781520]

約数ペア:

[(1, 261781520), (2, 130890760), (4, 65445380), (5, 52356304), (7, 37397360), (8, 32722690), (10, 26178152), (11, 23798320), (13, 20137040), (14, 18698680), (16, 16361345), (20, 13089076), (22, 11899160), (26, 10068520), (28, 9349340), (35, 7479472), (40, 6544538), (44, 5949580), (49, 5342480), (52, 5034260), (55, 4759664), (56, 4674670), (65, 4027408), (70, 3739736), (77, 3399760), (80, 3272269), (88, 2974790), (91, 2876720), (98, 2671240), (104, 2517130), (110, 2379832), (112, 2337335), (130, 2013704), (140, 1869868), (143, 1830640), (154, 1699880), (176, 1487395), (182, 1438360), (196, 1335620), (208, 1258565), (220, 1189916), (245, 1068496), (260, 1006852), (280, 934934), (286, 915320), (308, 849940), (364, 719180), (385, 679952), (392, 667810), (440, 594958), (455, 575344), (467, 560560), (490, 534248), (520, 503426), (539, 485680), (560, 467467), (572, 457660), (616, 424970), (637, 410960), (715, 366128), (728, 359590), (770, 339976), (784, 333905), (880, 297479), (910, 287672), (934, 280280), (980, 267124), (1001, 261520), (1040, 251713), (1078, 242840), (1144, 228830), (1232, 212485), (1274, 205480), (1430, 183064), (1456, 179795), (1540, 169988), (1820, 143836), (1868, 140140), (1960, 133562), (2002, 130760), (2156, 121420), (2288, 114415), (2335, 112112), (2548, 102740), (2695, 97136), (2860, 91532), (3080, 84994), (3185, 82192), (3269, 80080), (3640, 71918), (3736, 70070), (3920, 66781), (4004, 65380), (4312, 60710), (4670, 56056), (5005, 52304), (5096, 51370), (5137, 50960), (5390, 48568), (5720, 45766), (6071, 43120), (6160, 42497), (6370, 41096), (6538, 40040), (7007, 37360), (7280, 35959), (7472, 35035), (8008, 32690), (8624, 30355), (9340, 28028), (10010, 26152), (10192, 25685), (10274, 25480), (10780, 24284), (11440, 22883), (12142, 21560), (12740, 20548), (13076, 20020), (14014, 18680), (16016, 16345)]