20781464704

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{673}}^1$

素因数の和:959

約数の個数: 256

約数和(自身を含む): 55900373760

約数和(自身を除く): 35118909056

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 32, 44, 52, 56, 64, 77, 88, 91, 104, 112, 128, 143, 154, 176, 182, 208, 224, 241, 286, 308, 352, 364, 416, 448, 482, 572, 616, 673, 704, 728, 832, 896, 964, 1001, 1144, 1232, 1346, 1408, 1456, 1664, 1687, 1928, 2002, 2288, 2464, 2651, 2692, 2912, 3133, 3374, 3856, 4004, 4576, 4711, 4928, 5302, 5384, 5824, 6266, 6748, 7403, 7712, 8008, 8749, 9152, 9422, 9856, 10604, 10768, 11648, 12532, 13496, 14806, 15424, 16016, 17498, 18304, 18557, 18844, 21208, 21536, 21931, 25064, 26992, 29612, 30848, 32032, 34463, 34996, 37114, 37688, 42416, 43072, 43862, 50128, 51821, 53984, 59224, 61243, 64064, 68926, 69992, 74228, 75376, 84832, 86144, 87724, 96239, 100256, 103642, 107968, 118448, 122486, 128128, 137852, 139984, 148456, 150752, 162193, 169664, 175448, 192478, 200512, 207284, 215936, 236896, 241241, 244972, 275704, 279968, 296912, 301504, 324386, 339328, 350896, 384956, 401024, 414568, 473792, 482482, 489944, 551408, 559936, 593824, 603008, 648772, 673673, 701792, 769912, 829136, 947584, 964964, 979888, 1102816, 1119872, 1135351, 1187648, 1297544, 1347346, 1403584, 1539824, 1658272, 1784123, 1929928, 1959776, 2108509, 2205632, 2270702, 2375296, 2595088, 2694692, 2807168, 3079648, 3316544, 3568246, 3859856, 3919552, 4217018, 4411264, 4541404, 5190176, 5389384, 6159296, 6633088, 7136492, 7719712, 7839104, 8434036, 9082808, 10380352, 10778768, 12318592, 12488861, 14272984, 14759563, 15439424, 16868072, 18165616, 20760704, 21557536, 23193599, 24977722, 28545968, 29519126, 30878848, 33736144, 36331232, 43115072, 46387198, 49955444, 57091936, 59038252, 67472288, 72662464, 86230144, 92774396, 99910888, 114183872, 118076504, 134944576, 145324928, 162355193, 185548792, 199821776, 228367744, 236153008, 269889152, 324710386, 371097584, 399643552, 472306016, 649420772, 742195168, 799287104, 944612032, 1298841544, 1484390336, 1598574208, 1889224064, 2597683088, 2968780672, 5195366176, 10390732352, 20781464704]

約数ペア:

[(1, 20781464704), (2, 10390732352), (4, 5195366176), (7, 2968780672), (8, 2597683088), (11, 1889224064), (13, 1598574208), (14, 1484390336), (16, 1298841544), (22, 944612032), (26, 799287104), (28, 742195168), (32, 649420772), (44, 472306016), (52, 399643552), (56, 371097584), (64, 324710386), (77, 269889152), (88, 236153008), (91, 228367744), (104, 199821776), (112, 185548792), (128, 162355193), (143, 145324928), (154, 134944576), (176, 118076504), (182, 114183872), (208, 99910888), (224, 92774396), (241, 86230144), (286, 72662464), (308, 67472288), (352, 59038252), (364, 57091936), (416, 49955444), (448, 46387198), (482, 43115072), (572, 36331232), (616, 33736144), (673, 30878848), (704, 29519126), (728, 28545968), (832, 24977722), (896, 23193599), (964, 21557536), (1001, 20760704), (1144, 18165616), (1232, 16868072), (1346, 15439424), (1408, 14759563), (1456, 14272984), (1664, 12488861), (1687, 12318592), (1928, 10778768), (2002, 10380352), (2288, 9082808), (2464, 8434036), (2651, 7839104), (2692, 7719712), (2912, 7136492), (3133, 6633088), (3374, 6159296), (3856, 5389384), (4004, 5190176), (4576, 4541404), (4711, 4411264), (4928, 4217018), (5302, 3919552), (5384, 3859856), (5824, 3568246), (6266, 3316544), (6748, 3079648), (7403, 2807168), (7712, 2694692), (8008, 2595088), (8749, 2375296), (9152, 2270702), (9422, 2205632), (9856, 2108509), (10604, 1959776), (10768, 1929928), (11648, 1784123), (12532, 1658272), (13496, 1539824), (14806, 1403584), (15424, 1347346), (16016, 1297544), (17498, 1187648), (18304, 1135351), (18557, 1119872), (18844, 1102816), (21208, 979888), (21536, 964964), (21931, 947584), (25064, 829136), (26992, 769912), (29612, 701792), (30848, 673673), (32032, 648772), (34463, 603008), (34996, 593824), (37114, 559936), (37688, 551408), (42416, 489944), (43072, 482482), (43862, 473792), (50128, 414568), (51821, 401024), (53984, 384956), (59224, 350896), (61243, 339328), (64064, 324386), (68926, 301504), (69992, 296912), (74228, 279968), (75376, 275704), (84832, 244972), (86144, 241241), (87724, 236896), (96239, 215936), (100256, 207284), (103642, 200512), (107968, 192478), (118448, 175448), (122486, 169664), (128128, 162193), (137852, 150752), (139984, 148456)]