638145540

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:280

約数の個数: 240

約数和(自身を含む): 2103704064

約数和(自身を除く): 1465558524

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 31, 36, 45, 54, 60, 62, 81, 90, 93, 97, 108, 124, 131, 135, 155, 162, 180, 186, 194, 262, 270, 279, 291, 310, 324, 372, 388, 393, 405, 465, 485, 524, 540, 558, 582, 620, 655, 786, 810, 837, 873, 930, 970, 1116, 1164, 1179, 1310, 1395, 1455, 1572, 1620, 1674, 1746, 1860, 1940, 1965, 2358, 2511, 2619, 2620, 2790, 2910, 3007, 3348, 3492, 3537, 3930, 4061, 4185, 4365, 4716, 5022, 5238, 5580, 5820, 5895, 6014, 7074, 7857, 7860, 8122, 8370, 8730, 9021, 10044, 10476, 10611, 11790, 12028, 12183, 12555, 12707, 13095, 14148, 15035, 15714, 16244, 16740, 17460, 17685, 18042, 20305, 21222, 23580, 24366, 25110, 25414, 26190, 27063, 30070, 31428, 35370, 36084, 36549, 38121, 39285, 40610, 42444, 45105, 48732, 50220, 50828, 52380, 53055, 54126, 60140, 60915, 63535, 70740, 73098, 76242, 78570, 81189, 81220, 90210, 106110, 108252, 109647, 114363, 121830, 127070, 135315, 146196, 152484, 157140, 162378, 180420, 182745, 190605, 212220, 219294, 228726, 243567, 243660, 254140, 270630, 324756, 328941, 343089, 365490, 381210, 393917, 405945, 438588, 457452, 487134, 541260, 548235, 571815, 657882, 686178, 730980, 762420, 787834, 811890, 974268, 1029267, 1096470, 1143630, 1181751, 1217835, 1315764, 1372356, 1575668, 1623780, 1644705, 1715445, 1969585, 2058534, 2192940, 2287260, 2363502, 2435670, 3289410, 3430890, 3545253, 3939170, 4117068, 4727004, 4871340, 5146335, 5908755, 6578820, 6861780, 7090506, 7878340, 10292670, 10635759, 11817510, 14181012, 17726265, 20585340, 21271518, 23635020, 31907277, 35452530, 42543036, 53178795, 63814554, 70905060, 106357590, 127629108, 159536385, 212715180, 319072770, 638145540]

約数ペア:

[(1, 638145540), (2, 319072770), (3, 212715180), (4, 159536385), (5, 127629108), (6, 106357590), (9, 70905060), (10, 63814554), (12, 53178795), (15, 42543036), (18, 35452530), (20, 31907277), (27, 23635020), (30, 21271518), (31, 20585340), (36, 17726265), (45, 14181012), (54, 11817510), (60, 10635759), (62, 10292670), (81, 7878340), (90, 7090506), (93, 6861780), (97, 6578820), (108, 5908755), (124, 5146335), (131, 4871340), (135, 4727004), (155, 4117068), (162, 3939170), (180, 3545253), (186, 3430890), (194, 3289410), (262, 2435670), (270, 2363502), (279, 2287260), (291, 2192940), (310, 2058534), (324, 1969585), (372, 1715445), (388, 1644705), (393, 1623780), (405, 1575668), (465, 1372356), (485, 1315764), (524, 1217835), (540, 1181751), (558, 1143630), (582, 1096470), (620, 1029267), (655, 974268), (786, 811890), (810, 787834), (837, 762420), (873, 730980), (930, 686178), (970, 657882), (1116, 571815), (1164, 548235), (1179, 541260), (1310, 487134), (1395, 457452), (1455, 438588), (1572, 405945), (1620, 393917), (1674, 381210), (1746, 365490), (1860, 343089), (1940, 328941), (1965, 324756), (2358, 270630), (2511, 254140), (2619, 243660), (2620, 243567), (2790, 228726), (2910, 219294), (3007, 212220), (3348, 190605), (3492, 182745), (3537, 180420), (3930, 162378), (4061, 157140), (4185, 152484), (4365, 146196), (4716, 135315), (5022, 127070), (5238, 121830), (5580, 114363), (5820, 109647), (5895, 108252), (6014, 106110), (7074, 90210), (7857, 81220), (7860, 81189), (8122, 78570), (8370, 76242), (8730, 73098), (9021, 70740), (10044, 63535), (10476, 60915), (10611, 60140), (11790, 54126), (12028, 53055), (12183, 52380), (12555, 50828), (12707, 50220), (13095, 48732), (14148, 45105), (15035, 42444), (15714, 40610), (16244, 39285), (16740, 38121), (17460, 36549), (17685, 36084), (18042, 35370), (20305, 31428), (21222, 30070), (23580, 27063), (24366, 26190), (25110, 25414)]