20973771520

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{20663}}^1$

素因数の和:20758

約数の個数: 144

約数和(自身を含む): 54992855232

約数和(自身を除く): 34019083712

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 61, 64, 65, 80, 104, 122, 128, 130, 160, 208, 244, 256, 260, 305, 320, 416, 488, 520, 610, 640, 793, 832, 976, 1040, 1220, 1280, 1586, 1664, 1952, 2080, 2440, 3172, 3328, 3904, 3965, 4160, 4880, 6344, 7808, 7930, 8320, 9760, 12688, 15616, 15860, 16640, 19520, 20663, 25376, 31720, 39040, 41326, 50752, 63440, 78080, 82652, 101504, 103315, 126880, 165304, 203008, 206630, 253760, 268619, 330608, 413260, 507520, 537238, 661216, 826520, 1015040, 1074476, 1260443, 1322432, 1343095, 1653040, 2148952, 2520886, 2644864, 2686190, 3306080, 4297904, 5041772, 5289728, 5372380, 6302215, 6612160, 8595808, 10083544, 10744760, 12604430, 13224320, 16385759, 17191616, 20167088, 21489520, 25208860, 26448640, 32771518, 34383232, 40334176, 42979040, 50417720, 65543036, 68766464, 80668352, 81928795, 85958080, 100835440, 131086072, 161336704, 163857590, 171916160, 201670880, 262172144, 322673408, 327715180, 343832320, 403341760, 524344288, 655430360, 806683520, 1048688576, 1310860720, 1613367040, 2097377152, 2621721440, 4194754304, 5243442880, 10486885760, 20973771520]

約数ペア:

[(1, 20973771520), (2, 10486885760), (4, 5243442880), (5, 4194754304), (8, 2621721440), (10, 2097377152), (13, 1613367040), (16, 1310860720), (20, 1048688576), (26, 806683520), (32, 655430360), (40, 524344288), (52, 403341760), (61, 343832320), (64, 327715180), (65, 322673408), (80, 262172144), (104, 201670880), (122, 171916160), (128, 163857590), (130, 161336704), (160, 131086072), (208, 100835440), (244, 85958080), (256, 81928795), (260, 80668352), (305, 68766464), (320, 65543036), (416, 50417720), (488, 42979040), (520, 40334176), (610, 34383232), (640, 32771518), (793, 26448640), (832, 25208860), (976, 21489520), (1040, 20167088), (1220, 17191616), (1280, 16385759), (1586, 13224320), (1664, 12604430), (1952, 10744760), (2080, 10083544), (2440, 8595808), (3172, 6612160), (3328, 6302215), (3904, 5372380), (3965, 5289728), (4160, 5041772), (4880, 4297904), (6344, 3306080), (7808, 2686190), (7930, 2644864), (8320, 2520886), (9760, 2148952), (12688, 1653040), (15616, 1343095), (15860, 1322432), (16640, 1260443), (19520, 1074476), (20663, 1015040), (25376, 826520), (31720, 661216), (39040, 537238), (41326, 507520), (50752, 413260), (63440, 330608), (78080, 268619), (82652, 253760), (101504, 206630), (103315, 203008), (126880, 165304)]