20804965720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{25111}}^1$

素因数の和:25409

約数の個数: 128

約数和(自身を含む): 58581273600

約数和(自身を除く): 37776307880

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 269, 280, 308, 385, 440, 538, 616, 770, 1076, 1345, 1540, 1883, 2152, 2690, 2959, 3080, 3766, 5380, 5918, 7532, 9415, 10760, 11836, 14795, 15064, 18830, 20713, 23672, 25111, 29590, 37660, 41426, 50222, 59180, 75320, 82852, 100444, 103565, 118360, 125555, 165704, 175777, 200888, 207130, 251110, 276221, 351554, 414260, 502220, 552442, 703108, 828520, 878885, 1004440, 1104884, 1381105, 1406216, 1757770, 1933547, 2209768, 2762210, 3515540, 3867094, 5524420, 6754859, 7031080, 7734188, 9667735, 11048840, 13509718, 15468376, 19335470, 27019436, 33774295, 38670940, 47284013, 54038872, 67548590, 74303449, 77341880, 94568026, 135097180, 148606898, 189136052, 236420065, 270194360, 297213796, 371517245, 378272104, 472840130, 520124143, 594427592, 743034490, 945680260, 1040248286, 1486068980, 1891360520, 2080496572, 2600620715, 2972137960, 4160993144, 5201241430, 10402482860, 20804965720]

約数ペア:

[(1, 20804965720), (2, 10402482860), (4, 5201241430), (5, 4160993144), (7, 2972137960), (8, 2600620715), (10, 2080496572), (11, 1891360520), (14, 1486068980), (20, 1040248286), (22, 945680260), (28, 743034490), (35, 594427592), (40, 520124143), (44, 472840130), (55, 378272104), (56, 371517245), (70, 297213796), (77, 270194360), (88, 236420065), (110, 189136052), (140, 148606898), (154, 135097180), (220, 94568026), (269, 77341880), (280, 74303449), (308, 67548590), (385, 54038872), (440, 47284013), (538, 38670940), (616, 33774295), (770, 27019436), (1076, 19335470), (1345, 15468376), (1540, 13509718), (1883, 11048840), (2152, 9667735), (2690, 7734188), (2959, 7031080), (3080, 6754859), (3766, 5524420), (5380, 3867094), (5918, 3515540), (7532, 2762210), (9415, 2209768), (10760, 1933547), (11836, 1757770), (14795, 1406216), (15064, 1381105), (18830, 1104884), (20713, 1004440), (23672, 878885), (25111, 828520), (29590, 703108), (37660, 552442), (41426, 502220), (50222, 414260), (59180, 351554), (75320, 276221), (82852, 251110), (100444, 207130), (103565, 200888), (118360, 175777), (125555, 165704)]