20120400

素因数分解:

$2^4\times 3^7\times 5^2\times {\mathrm{23}}^1$

素因数の和:62

約数の個数: 240

約数和(自身を含む): 75649920

約数和(自身を除く): 55529520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 25, 27, 30, 36, 40, 45, 46, 48, 50, 54, 60, 69, 72, 75, 80, 81, 90, 92, 100, 108, 115, 120, 135, 138, 144, 150, 162, 180, 184, 200, 207, 216, 225, 230, 240, 243, 270, 276, 300, 324, 345, 360, 368, 400, 405, 414, 432, 450, 460, 486, 540, 552, 575, 600, 621, 648, 675, 690, 720, 729, 810, 828, 900, 920, 972, 1035, 1080, 1104, 1150, 1200, 1215, 1242, 1296, 1350, 1380, 1458, 1620, 1656, 1725, 1800, 1840, 1863, 1944, 2025, 2070, 2160, 2187, 2300, 2430, 2484, 2700, 2760, 2916, 3105, 3240, 3312, 3450, 3600, 3645, 3726, 3888, 4050, 4140, 4374, 4600, 4860, 4968, 5175, 5400, 5520, 5589, 5832, 6075, 6210, 6480, 6900, 7290, 7452, 8100, 8280, 8748, 9200, 9315, 9720, 9936, 10350, 10800, 10935, 11178, 11664, 12150, 12420, 13800, 14580, 14904, 15525, 16200, 16560, 16767, 17496, 18225, 18630, 19440, 20700, 21870, 22356, 24300, 24840, 27600, 27945, 29160, 29808, 31050, 32400, 33534, 34992, 36450, 37260, 41400, 43740, 44712, 46575, 48600, 49680, 50301, 54675, 55890, 58320, 62100, 67068, 72900, 74520, 82800, 83835, 87480, 89424, 93150, 97200, 100602, 109350, 111780, 124200, 134136, 139725, 145800, 149040, 167670, 174960, 186300, 201204, 218700, 223560, 248400, 251505, 268272, 279450, 291600, 335340, 372600, 402408, 419175, 437400, 447120, 503010, 558900, 670680, 745200, 804816, 838350, 874800, 1006020, 1117800, 1257525, 1341360, 1676700, 2012040, 2235600, 2515050, 3353400, 4024080, 5030100, 6706800, 10060200, 20120400]

約数ペア:

[(1, 20120400), (2, 10060200), (3, 6706800), (4, 5030100), (5, 4024080), (6, 3353400), (8, 2515050), (9, 2235600), (10, 2012040), (12, 1676700), (15, 1341360), (16, 1257525), (18, 1117800), (20, 1006020), (23, 874800), (24, 838350), (25, 804816), (27, 745200), (30, 670680), (36, 558900), (40, 503010), (45, 447120), (46, 437400), (48, 419175), (50, 402408), (54, 372600), (60, 335340), (69, 291600), (72, 279450), (75, 268272), (80, 251505), (81, 248400), (90, 223560), (92, 218700), (100, 201204), (108, 186300), (115, 174960), (120, 167670), (135, 149040), (138, 145800), (144, 139725), (150, 134136), (162, 124200), (180, 111780), (184, 109350), (200, 100602), (207, 97200), (216, 93150), (225, 89424), (230, 87480), (240, 83835), (243, 82800), (270, 74520), (276, 72900), (300, 67068), (324, 62100), (345, 58320), (360, 55890), (368, 54675), (400, 50301), (405, 49680), (414, 48600), (432, 46575), (450, 44712), (460, 43740), (486, 41400), (540, 37260), (552, 36450), (575, 34992), (600, 33534), (621, 32400), (648, 31050), (675, 29808), (690, 29160), (720, 27945), (729, 27600), (810, 24840), (828, 24300), (900, 22356), (920, 21870), (972, 20700), (1035, 19440), (1080, 18630), (1104, 18225), (1150, 17496), (1200, 16767), (1215, 16560), (1242, 16200), (1296, 15525), (1350, 14904), (1380, 14580), (1458, 13800), (1620, 12420), (1656, 12150), (1725, 11664), (1800, 11178), (1840, 10935), (1863, 10800), (1944, 10350), (2025, 9936), (2070, 9720), (2160, 9315), (2187, 9200), (2300, 8748), (2430, 8280), (2484, 8100), (2700, 7452), (2760, 7290), (2916, 6900), (3105, 6480), (3240, 6210), (3312, 6075), (3450, 5832), (3600, 5589), (3645, 5520), (3726, 5400), (3888, 5175), (4050, 4968), (4140, 4860), (4374, 4600)]