261540720

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{51893}}^1$

素因数の和:51919

約数の個数: 120

約数和(自身を含む): 1003837536

約数和(自身を除く): 742296816

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, 51893, 103786, 155679, 207572, 259465, 311358, 363251, 415144, 467037, 518930, 622716, 726502, 778395, 830288, 934074, 1037860, 1089753, 1245432, 1453004, 1556790, 1816255, 1868148, 2075720, 2179506, 2335185, 2490864, 2906008, 3113580, 3269259, 3632510, 3736296, 4151440, 4359012, 4670370, 5448765, 5812016, 6227160, 6538518, 7265020, 7472592, 8718024, 9340740, 10897530, 12454320, 13077036, 14530040, 16346295, 17436048, 18681480, 21795060, 26154072, 29060080, 32692590, 37362960, 43590120, 52308144, 65385180, 87180240, 130770360, 261540720]

約数ペア:

[(1, 261540720), (2, 130770360), (3, 87180240), (4, 65385180), (5, 52308144), (6, 43590120), (7, 37362960), (8, 32692590), (9, 29060080), (10, 26154072), (12, 21795060), (14, 18681480), (15, 17436048), (16, 16346295), (18, 14530040), (20, 13077036), (21, 12454320), (24, 10897530), (28, 9340740), (30, 8718024), (35, 7472592), (36, 7265020), (40, 6538518), (42, 6227160), (45, 5812016), (48, 5448765), (56, 4670370), (60, 4359012), (63, 4151440), (70, 3736296), (72, 3632510), (80, 3269259), (84, 3113580), (90, 2906008), (105, 2490864), (112, 2335185), (120, 2179506), (126, 2075720), (140, 1868148), (144, 1816255), (168, 1556790), (180, 1453004), (210, 1245432), (240, 1089753), (252, 1037860), (280, 934074), (315, 830288), (336, 778395), (360, 726502), (420, 622716), (504, 518930), (560, 467037), (630, 415144), (720, 363251), (840, 311358), (1008, 259465), (1260, 207572), (1680, 155679), (2520, 103786), (5040, 51893)]