20737492720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{137}}^2\times {\mathrm{1973}}^1$

素因数の和:2267

約数の個数: 120

約数和(自身を含む): 55535757984

約数和(自身を除く): 34798265264

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 137, 140, 274, 280, 548, 560, 685, 959, 1096, 1370, 1918, 1973, 2192, 2740, 3836, 3946, 4795, 5480, 7672, 7892, 9590, 9865, 10960, 13811, 15344, 15784, 18769, 19180, 19730, 27622, 31568, 37538, 38360, 39460, 55244, 69055, 75076, 76720, 78920, 93845, 110488, 131383, 138110, 150152, 157840, 187690, 220976, 262766, 270301, 276220, 300304, 375380, 525532, 540602, 552440, 656915, 750760, 1051064, 1081204, 1104880, 1313830, 1351505, 1501520, 1892107, 2102128, 2162408, 2627660, 2703010, 3784214, 4324816, 5255320, 5406020, 7568428, 9460535, 10510640, 10812040, 15136856, 18921070, 21624080, 30273712, 37031237, 37842140, 74062474, 75684280, 148124948, 151368560, 185156185, 259218659, 296249896, 370312370, 518437318, 592499792, 740624740, 1036874636, 1296093295, 1481249480, 2073749272, 2592186590, 2962498960, 4147498544, 5184373180, 10368746360, 20737492720]

約数ペア:

[(1, 20737492720), (2, 10368746360), (4, 5184373180), (5, 4147498544), (7, 2962498960), (8, 2592186590), (10, 2073749272), (14, 1481249480), (16, 1296093295), (20, 1036874636), (28, 740624740), (35, 592499792), (40, 518437318), (56, 370312370), (70, 296249896), (80, 259218659), (112, 185156185), (137, 151368560), (140, 148124948), (274, 75684280), (280, 74062474), (548, 37842140), (560, 37031237), (685, 30273712), (959, 21624080), (1096, 18921070), (1370, 15136856), (1918, 10812040), (1973, 10510640), (2192, 9460535), (2740, 7568428), (3836, 5406020), (3946, 5255320), (4795, 4324816), (5480, 3784214), (7672, 2703010), (7892, 2627660), (9590, 2162408), (9865, 2102128), (10960, 1892107), (13811, 1501520), (15344, 1351505), (15784, 1313830), (18769, 1104880), (19180, 1081204), (19730, 1051064), (27622, 750760), (31568, 656915), (37538, 552440), (38360, 540602), (39460, 525532), (55244, 375380), (69055, 300304), (75076, 276220), (76720, 270301), (78920, 262766), (93845, 220976), (110488, 187690), (131383, 157840), (138110, 150152)]