257549320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{887}}^1$

素因数の和:983

約数の個数: 128

約数和(自身を含む): 713525760

約数和(自身を除く): 455976440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 61, 68, 70, 85, 119, 122, 136, 140, 170, 238, 244, 280, 305, 340, 427, 476, 488, 595, 610, 680, 854, 887, 952, 1037, 1190, 1220, 1708, 1774, 2074, 2135, 2380, 2440, 3416, 3548, 4148, 4270, 4435, 4760, 5185, 6209, 7096, 7259, 8296, 8540, 8870, 10370, 12418, 14518, 15079, 17080, 17740, 20740, 24836, 29036, 30158, 31045, 35480, 36295, 41480, 49672, 54107, 58072, 60316, 62090, 72590, 75395, 105553, 108214, 120632, 124180, 145180, 150790, 211106, 216428, 248360, 270535, 290360, 301580, 378749, 422212, 432856, 527765, 541070, 603160, 757498, 844424, 919819, 1055530, 1082140, 1514996, 1839638, 1893745, 2111060, 2164280, 3029992, 3679276, 3787490, 4222120, 4599095, 6438733, 7358552, 7574980, 9198190, 12877466, 15149960, 18396380, 25754932, 32193665, 36792760, 51509864, 64387330, 128774660, 257549320]

約数ペア:

[(1, 257549320), (2, 128774660), (4, 64387330), (5, 51509864), (7, 36792760), (8, 32193665), (10, 25754932), (14, 18396380), (17, 15149960), (20, 12877466), (28, 9198190), (34, 7574980), (35, 7358552), (40, 6438733), (56, 4599095), (61, 4222120), (68, 3787490), (70, 3679276), (85, 3029992), (119, 2164280), (122, 2111060), (136, 1893745), (140, 1839638), (170, 1514996), (238, 1082140), (244, 1055530), (280, 919819), (305, 844424), (340, 757498), (427, 603160), (476, 541070), (488, 527765), (595, 432856), (610, 422212), (680, 378749), (854, 301580), (887, 290360), (952, 270535), (1037, 248360), (1190, 216428), (1220, 211106), (1708, 150790), (1774, 145180), (2074, 124180), (2135, 120632), (2380, 108214), (2440, 105553), (3416, 75395), (3548, 72590), (4148, 62090), (4270, 60316), (4435, 58072), (4760, 54107), (5185, 49672), (6209, 41480), (7096, 36295), (7259, 35480), (8296, 31045), (8540, 30158), (8870, 29036), (10370, 24836), (12418, 20740), (14518, 17740), (15079, 17080)]