2780408190

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{211}}^1\times {\mathrm{479}}^1$

素因数の和:838

約数の個数: 128

約数和(自身を含む): 7737016320

約数和(自身を除く): 4956608130

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 131, 210, 211, 262, 393, 422, 479, 633, 655, 786, 917, 958, 1055, 1266, 1310, 1437, 1477, 1834, 1965, 2110, 2395, 2751, 2874, 2954, 3165, 3353, 3930, 4431, 4585, 4790, 5502, 6330, 6706, 7185, 7385, 8862, 9170, 10059, 13755, 14370, 14770, 16765, 20118, 22155, 27510, 27641, 33530, 44310, 50295, 55282, 62749, 82923, 100590, 101069, 125498, 138205, 165846, 188247, 193487, 202138, 276410, 303207, 313745, 376494, 386974, 414615, 439243, 505345, 580461, 606414, 627490, 707483, 829230, 878486, 941235, 967435, 1010690, 1160922, 1317729, 1414966, 1516035, 1882470, 1934870, 2122449, 2196215, 2635458, 2902305, 3032070, 3537415, 4244898, 4392430, 5804610, 6588645, 7074830, 10612245, 13177290, 13240039, 21224490, 26480078, 39720117, 66200195, 79440234, 92680273, 132400390, 185360546, 198600585, 278040819, 397201170, 463401365, 556081638, 926802730, 1390204095, 2780408190]

約数ペア:

[(1, 2780408190), (2, 1390204095), (3, 926802730), (5, 556081638), (6, 463401365), (7, 397201170), (10, 278040819), (14, 198600585), (15, 185360546), (21, 132400390), (30, 92680273), (35, 79440234), (42, 66200195), (70, 39720117), (105, 26480078), (131, 21224490), (210, 13240039), (211, 13177290), (262, 10612245), (393, 7074830), (422, 6588645), (479, 5804610), (633, 4392430), (655, 4244898), (786, 3537415), (917, 3032070), (958, 2902305), (1055, 2635458), (1266, 2196215), (1310, 2122449), (1437, 1934870), (1477, 1882470), (1834, 1516035), (1965, 1414966), (2110, 1317729), (2395, 1160922), (2751, 1010690), (2874, 967435), (2954, 941235), (3165, 878486), (3353, 829230), (3930, 707483), (4431, 627490), (4585, 606414), (4790, 580461), (5502, 505345), (6330, 439243), (6706, 414615), (7185, 386974), (7385, 376494), (8862, 313745), (9170, 303207), (10059, 276410), (13755, 202138), (14370, 193487), (14770, 188247), (16765, 165846), (20118, 138205), (22155, 125498), (27510, 101069), (27641, 100590), (33530, 82923), (44310, 62749), (50295, 55282)]