638287020

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1289}}^1$

素因数の和:1445

約数の個数: 192

約数和(自身を含む): 2288563200

約数和(自身を除く): 1650276180

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 131, 135, 140, 180, 189, 210, 252, 262, 270, 315, 378, 393, 420, 524, 540, 630, 655, 756, 786, 917, 945, 1179, 1260, 1289, 1310, 1572, 1834, 1890, 1965, 2358, 2578, 2620, 2751, 3537, 3668, 3780, 3867, 3930, 4585, 4716, 5156, 5502, 5895, 6445, 7074, 7734, 7860, 8253, 9023, 9170, 11004, 11601, 11790, 12890, 13755, 14148, 15468, 16506, 17685, 18046, 18340, 19335, 23202, 23580, 24759, 25780, 27069, 27510, 33012, 34803, 35370, 36092, 38670, 41265, 45115, 46404, 49518, 54138, 55020, 58005, 69606, 70740, 77340, 81207, 82530, 90230, 99036, 108276, 116010, 123795, 135345, 139212, 162414, 165060, 168859, 174015, 180460, 232020, 243621, 247590, 270690, 324828, 337718, 348030, 406035, 487242, 495180, 506577, 541380, 675436, 696060, 812070, 844295, 974484, 1013154, 1182013, 1218105, 1519731, 1624140, 1688590, 2026308, 2364026, 2436210, 2532885, 3039462, 3377180, 3546039, 4559193, 4728052, 4872420, 5065770, 5910065, 6078924, 7092078, 7598655, 9118386, 10131540, 10638117, 11820130, 14184156, 15197310, 17730195, 18236772, 21276234, 22795965, 23640260, 30394620, 31914351, 35460390, 42552468, 45591930, 53190585, 63828702, 70920780, 91183860, 106381170, 127657404, 159571755, 212762340, 319143510, 638287020]

約数ペア:

[(1, 638287020), (2, 319143510), (3, 212762340), (4, 159571755), (5, 127657404), (6, 106381170), (7, 91183860), (9, 70920780), (10, 63828702), (12, 53190585), (14, 45591930), (15, 42552468), (18, 35460390), (20, 31914351), (21, 30394620), (27, 23640260), (28, 22795965), (30, 21276234), (35, 18236772), (36, 17730195), (42, 15197310), (45, 14184156), (54, 11820130), (60, 10638117), (63, 10131540), (70, 9118386), (84, 7598655), (90, 7092078), (105, 6078924), (108, 5910065), (126, 5065770), (131, 4872420), (135, 4728052), (140, 4559193), (180, 3546039), (189, 3377180), (210, 3039462), (252, 2532885), (262, 2436210), (270, 2364026), (315, 2026308), (378, 1688590), (393, 1624140), (420, 1519731), (524, 1218105), (540, 1182013), (630, 1013154), (655, 974484), (756, 844295), (786, 812070), (917, 696060), (945, 675436), (1179, 541380), (1260, 506577), (1289, 495180), (1310, 487242), (1572, 406035), (1834, 348030), (1890, 337718), (1965, 324828), (2358, 270690), (2578, 247590), (2620, 243621), (2751, 232020), (3537, 180460), (3668, 174015), (3780, 168859), (3867, 165060), (3930, 162414), (4585, 139212), (4716, 135345), (5156, 123795), (5502, 116010), (5895, 108276), (6445, 99036), (7074, 90230), (7734, 82530), (7860, 81207), (8253, 77340), (9023, 70740), (9170, 69606), (11004, 58005), (11601, 55020), (11790, 54138), (12890, 49518), (13755, 46404), (14148, 45115), (15468, 41265), (16506, 38670), (17685, 36092), (18046, 35370), (18340, 34803), (19335, 33012), (23202, 27510), (23580, 27069), (24759, 25780)]