638129520

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{126613}}^1$

素因数の和:126639

約数の個数: 120

約数和(自身を含む): 2449221216

約数和(自身を除く): 1811091696

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 5040, 126613, 253226, 379839, 506452, 633065, 759678, 886291, 1012904, 1139517, 1266130, 1519356, 1772582, 1899195, 2025808, 2279034, 2532260, 2658873, 3038712, 3545164, 3798390, 4431455, 4558068, 5064520, 5317746, 5697585, 6077424, 7090328, 7596780, 7976619, 8862910, 9116136, 10129040, 10635492, 11395170, 13294365, 14180656, 15193560, 15953238, 17725820, 18232272, 21270984, 22790340, 26588730, 30387120, 31906476, 35451640, 39883095, 42541968, 45580680, 53177460, 63812952, 70903280, 79766190, 91161360, 106354920, 127625904, 159532380, 212709840, 319064760, 638129520]

約数ペア:

[(1, 638129520), (2, 319064760), (3, 212709840), (4, 159532380), (5, 127625904), (6, 106354920), (7, 91161360), (8, 79766190), (9, 70903280), (10, 63812952), (12, 53177460), (14, 45580680), (15, 42541968), (16, 39883095), (18, 35451640), (20, 31906476), (21, 30387120), (24, 26588730), (28, 22790340), (30, 21270984), (35, 18232272), (36, 17725820), (40, 15953238), (42, 15193560), (45, 14180656), (48, 13294365), (56, 11395170), (60, 10635492), (63, 10129040), (70, 9116136), (72, 8862910), (80, 7976619), (84, 7596780), (90, 7090328), (105, 6077424), (112, 5697585), (120, 5317746), (126, 5064520), (140, 4558068), (144, 4431455), (168, 3798390), (180, 3545164), (210, 3038712), (240, 2658873), (252, 2532260), (280, 2279034), (315, 2025808), (336, 1899195), (360, 1772582), (420, 1519356), (504, 1266130), (560, 1139517), (630, 1012904), (720, 886291), (840, 759678), (1008, 633065), (1260, 506452), (1680, 379839), (2520, 253226), (5040, 126613)]