261597280

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{547}}^1$

素因数の和:637

約数の個数: 144

約数和(自身を含む): 732046896

約数和(自身を除く): 470449616

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 61, 70, 80, 98, 112, 122, 140, 160, 196, 224, 244, 245, 280, 305, 392, 427, 488, 490, 547, 560, 610, 784, 854, 976, 980, 1094, 1120, 1220, 1568, 1708, 1952, 1960, 2135, 2188, 2440, 2735, 2989, 3416, 3829, 3920, 4270, 4376, 4880, 5470, 5978, 6832, 7658, 7840, 8540, 8752, 9760, 10940, 11956, 13664, 14945, 15316, 17080, 17504, 19145, 21880, 23912, 26803, 29890, 30632, 33367, 34160, 38290, 43760, 47824, 53606, 59780, 61264, 66734, 68320, 76580, 87520, 95648, 107212, 119560, 122528, 133468, 134015, 153160, 166835, 214424, 233569, 239120, 266936, 268030, 306320, 333670, 428848, 467138, 478240, 533872, 536060, 612640, 667340, 857696, 934276, 1067744, 1072120, 1167845, 1334680, 1634983, 1868552, 2144240, 2335690, 2669360, 3269966, 3737104, 4288480, 4671380, 5338720, 6539932, 7474208, 8174915, 9342760, 13079864, 16349830, 18685520, 26159728, 32699660, 37371040, 52319456, 65399320, 130798640, 261597280]

約数ペア:

[(1, 261597280), (2, 130798640), (4, 65399320), (5, 52319456), (7, 37371040), (8, 32699660), (10, 26159728), (14, 18685520), (16, 16349830), (20, 13079864), (28, 9342760), (32, 8174915), (35, 7474208), (40, 6539932), (49, 5338720), (56, 4671380), (61, 4288480), (70, 3737104), (80, 3269966), (98, 2669360), (112, 2335690), (122, 2144240), (140, 1868552), (160, 1634983), (196, 1334680), (224, 1167845), (244, 1072120), (245, 1067744), (280, 934276), (305, 857696), (392, 667340), (427, 612640), (488, 536060), (490, 533872), (547, 478240), (560, 467138), (610, 428848), (784, 333670), (854, 306320), (976, 268030), (980, 266936), (1094, 239120), (1120, 233569), (1220, 214424), (1568, 166835), (1708, 153160), (1952, 134015), (1960, 133468), (2135, 122528), (2188, 119560), (2440, 107212), (2735, 95648), (2989, 87520), (3416, 76580), (3829, 68320), (3920, 66734), (4270, 61264), (4376, 59780), (4880, 53606), (5470, 47824), (5978, 43760), (6832, 38290), (7658, 34160), (7840, 33367), (8540, 30632), (8752, 29890), (9760, 26803), (10940, 23912), (11956, 21880), (13664, 19145), (14945, 17504), (15316, 17080)]