2788891280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1\times {\mathrm{479}}^1$

素因数の和:817

約数の個数: 160

約数和(自身を含む): 7653795840

約数和(自身を除く): 4864904560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 56, 70, 74, 80, 112, 140, 148, 185, 259, 280, 281, 296, 370, 479, 518, 560, 562, 592, 740, 958, 1036, 1124, 1295, 1405, 1480, 1916, 1967, 2072, 2248, 2395, 2590, 2810, 2960, 3353, 3832, 3934, 4144, 4496, 4790, 5180, 5620, 6706, 7664, 7868, 9580, 9835, 10360, 10397, 11240, 13412, 15736, 16765, 17723, 19160, 19670, 20720, 20794, 22480, 26824, 31472, 33530, 35446, 38320, 39340, 41588, 51985, 53648, 67060, 70892, 72779, 78680, 83176, 88615, 103970, 124061, 134120, 134599, 141784, 145558, 157360, 166352, 177230, 207940, 248122, 268240, 269198, 283568, 291116, 354460, 363895, 415880, 496244, 538396, 582232, 620305, 672995, 708920, 727790, 831760, 942193, 992488, 1076792, 1164464, 1240610, 1345990, 1417840, 1455580, 1884386, 1984976, 2153584, 2481220, 2691980, 2911160, 3768772, 4710965, 4962440, 4980163, 5383960, 5822320, 7537544, 9421930, 9924880, 9960326, 10767920, 15075088, 18843860, 19920652, 24900815, 34861141, 37687720, 39841304, 49801630, 69722282, 75375440, 79682608, 99603260, 139444564, 174305705, 199206520, 278889128, 348611410, 398413040, 557778256, 697222820, 1394445640, 2788891280]

約数ペア:

[(1, 2788891280), (2, 1394445640), (4, 697222820), (5, 557778256), (7, 398413040), (8, 348611410), (10, 278889128), (14, 199206520), (16, 174305705), (20, 139444564), (28, 99603260), (35, 79682608), (37, 75375440), (40, 69722282), (56, 49801630), (70, 39841304), (74, 37687720), (80, 34861141), (112, 24900815), (140, 19920652), (148, 18843860), (185, 15075088), (259, 10767920), (280, 9960326), (281, 9924880), (296, 9421930), (370, 7537544), (479, 5822320), (518, 5383960), (560, 4980163), (562, 4962440), (592, 4710965), (740, 3768772), (958, 2911160), (1036, 2691980), (1124, 2481220), (1295, 2153584), (1405, 1984976), (1480, 1884386), (1916, 1455580), (1967, 1417840), (2072, 1345990), (2248, 1240610), (2395, 1164464), (2590, 1076792), (2810, 992488), (2960, 942193), (3353, 831760), (3832, 727790), (3934, 708920), (4144, 672995), (4496, 620305), (4790, 582232), (5180, 538396), (5620, 496244), (6706, 415880), (7664, 363895), (7868, 354460), (9580, 291116), (9835, 283568), (10360, 269198), (10397, 268240), (11240, 248122), (13412, 207940), (15736, 177230), (16765, 166352), (17723, 157360), (19160, 145558), (19670, 141784), (20720, 134599), (20794, 134120), (22480, 124061), (26824, 103970), (31472, 88615), (33530, 83176), (35446, 78680), (38320, 72779), (39340, 70892), (41588, 67060), (51985, 53648)]