990177720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{31859}}^1$

素因数の和:31917

約数の個数: 128

約数和(自身を含む): 3486758400

約数和(自身を除く): 2496580680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 37, 40, 42, 56, 60, 70, 74, 84, 105, 111, 120, 140, 148, 168, 185, 210, 222, 259, 280, 296, 370, 420, 444, 518, 555, 740, 777, 840, 888, 1036, 1110, 1295, 1480, 1554, 2072, 2220, 2590, 3108, 3885, 4440, 5180, 6216, 7770, 10360, 15540, 31080, 31859, 63718, 95577, 127436, 159295, 191154, 223013, 254872, 318590, 382308, 446026, 477885, 637180, 669039, 764616, 892052, 955770, 1115065, 1178783, 1274360, 1338078, 1784104, 1911540, 2230130, 2357566, 2676156, 3345195, 3536349, 3823080, 4460260, 4715132, 5352312, 5893915, 6690390, 7072698, 8251481, 8920520, 9430264, 11787830, 13380780, 14145396, 16502962, 17681745, 23575660, 24754443, 26761560, 28290792, 33005924, 35363490, 41257405, 47151320, 49508886, 66011848, 70726980, 82514810, 99017772, 123772215, 141453960, 165029620, 198035544, 247544430, 330059240, 495088860, 990177720]

約数ペア:

[(1, 990177720), (2, 495088860), (3, 330059240), (4, 247544430), (5, 198035544), (6, 165029620), (7, 141453960), (8, 123772215), (10, 99017772), (12, 82514810), (14, 70726980), (15, 66011848), (20, 49508886), (21, 47151320), (24, 41257405), (28, 35363490), (30, 33005924), (35, 28290792), (37, 26761560), (40, 24754443), (42, 23575660), (56, 17681745), (60, 16502962), (70, 14145396), (74, 13380780), (84, 11787830), (105, 9430264), (111, 8920520), (120, 8251481), (140, 7072698), (148, 6690390), (168, 5893915), (185, 5352312), (210, 4715132), (222, 4460260), (259, 3823080), (280, 3536349), (296, 3345195), (370, 2676156), (420, 2357566), (444, 2230130), (518, 1911540), (555, 1784104), (740, 1338078), (777, 1274360), (840, 1178783), (888, 1115065), (1036, 955770), (1110, 892052), (1295, 764616), (1480, 669039), (1554, 637180), (2072, 477885), (2220, 446026), (2590, 382308), (3108, 318590), (3885, 254872), (4440, 223013), (5180, 191154), (6216, 159295), (7770, 127436), (10360, 95577), (15540, 63718), (31080, 31859)]