1389969280

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{349}}^1$

素因数の和:509

約数の個数: 192

約数和(自身を含む): 3907008000

約数和(自身を除く): 2517038720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 127, 128, 140, 160, 196, 224, 245, 254, 280, 320, 349, 392, 448, 490, 508, 560, 635, 640, 698, 784, 889, 896, 980, 1016, 1120, 1270, 1396, 1568, 1745, 1778, 1960, 2032, 2240, 2443, 2540, 2792, 3136, 3490, 3556, 3920, 4064, 4445, 4480, 4886, 5080, 5584, 6223, 6272, 6980, 7112, 7840, 8128, 8890, 9772, 10160, 11168, 12215, 12446, 13960, 14224, 15680, 16256, 17101, 17780, 19544, 20320, 22336, 24430, 24892, 27920, 28448, 31115, 31360, 34202, 35560, 39088, 40640, 44323, 44672, 48860, 49784, 55840, 56896, 62230, 68404, 71120, 78176, 81280, 85505, 88646, 97720, 99568, 111680, 113792, 124460, 136808, 142240, 156352, 171010, 177292, 195440, 199136, 221615, 223360, 248920, 273616, 284480, 310261, 312704, 342020, 354584, 390880, 398272, 443230, 497840, 547232, 568960, 620522, 684040, 709168, 781760, 796544, 886460, 995680, 1094464, 1241044, 1368080, 1418336, 1551305, 1563520, 1772920, 1991360, 2171827, 2188928, 2482088, 2736160, 2836672, 3102610, 3545840, 3982720, 4343654, 4964176, 5472320, 5673344, 6205220, 7091680, 8687308, 9928352, 10859135, 10944640, 12410440, 14183360, 17374616, 19856704, 21718270, 24820880, 28366720, 34749232, 39713408, 43436540, 49641760, 69498464, 86873080, 99283520, 138996928, 173746160, 198567040, 277993856, 347492320, 694984640, 1389969280]

約数ペア:

[(1, 1389969280), (2, 694984640), (4, 347492320), (5, 277993856), (7, 198567040), (8, 173746160), (10, 138996928), (14, 99283520), (16, 86873080), (20, 69498464), (28, 49641760), (32, 43436540), (35, 39713408), (40, 34749232), (49, 28366720), (56, 24820880), (64, 21718270), (70, 19856704), (80, 17374616), (98, 14183360), (112, 12410440), (127, 10944640), (128, 10859135), (140, 9928352), (160, 8687308), (196, 7091680), (224, 6205220), (245, 5673344), (254, 5472320), (280, 4964176), (320, 4343654), (349, 3982720), (392, 3545840), (448, 3102610), (490, 2836672), (508, 2736160), (560, 2482088), (635, 2188928), (640, 2171827), (698, 1991360), (784, 1772920), (889, 1563520), (896, 1551305), (980, 1418336), (1016, 1368080), (1120, 1241044), (1270, 1094464), (1396, 995680), (1568, 886460), (1745, 796544), (1778, 781760), (1960, 709168), (2032, 684040), (2240, 620522), (2443, 568960), (2540, 547232), (2792, 497840), (3136, 443230), (3490, 398272), (3556, 390880), (3920, 354584), (4064, 342020), (4445, 312704), (4480, 310261), (4886, 284480), (5080, 273616), (5584, 248920), (6223, 223360), (6272, 221615), (6980, 199136), (7112, 195440), (7840, 177292), (8128, 171010), (8890, 156352), (9772, 142240), (10160, 136808), (11168, 124460), (12215, 113792), (12446, 111680), (13960, 99568), (14224, 97720), (15680, 88646), (16256, 85505), (17101, 81280), (17780, 78176), (19544, 71120), (20320, 68404), (22336, 62230), (24430, 56896), (24892, 55840), (27920, 49784), (28448, 48860), (31115, 44672), (31360, 44323), (34202, 40640), (35560, 39088)]