661290840

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{661}}^1$

素因数の和:1082

約数の個数: 192

約数和(自身を含む): 2466135360

約数和(自身を除く): 1804844520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 397, 420, 504, 630, 661, 794, 840, 1191, 1260, 1322, 1588, 1983, 1985, 2382, 2520, 2644, 2779, 3176, 3305, 3573, 3966, 3970, 4627, 4764, 5288, 5558, 5949, 5955, 6610, 7146, 7932, 7940, 8337, 9254, 9528, 9915, 11116, 11898, 11910, 13220, 13881, 13895, 14292, 15864, 15880, 16674, 17865, 18508, 19830, 22232, 23135, 23796, 23820, 25011, 26440, 27762, 27790, 28584, 29745, 33348, 35730, 37016, 39660, 41643, 41685, 46270, 47592, 47640, 50022, 55524, 55580, 59490, 66696, 69405, 71460, 79320, 83286, 83370, 92540, 100044, 111048, 111160, 118980, 125055, 138810, 142920, 166572, 166740, 185080, 200088, 208215, 237960, 250110, 262417, 277620, 333144, 333480, 416430, 500220, 524834, 555240, 787251, 832860, 1000440, 1049668, 1312085, 1574502, 1665720, 1836919, 2099336, 2361753, 2624170, 3149004, 3673838, 3936255, 4723506, 5248340, 5510757, 6298008, 7347676, 7872510, 9184595, 9447012, 10496680, 11021514, 11808765, 14695352, 15745020, 16532271, 18369190, 18894024, 22043028, 23617530, 27553785, 31490040, 33064542, 36738380, 44086056, 47235060, 55107570, 66129084, 73476760, 82661355, 94470120, 110215140, 132258168, 165322710, 220430280, 330645420, 661290840]

約数ペア:

[(1, 661290840), (2, 330645420), (3, 220430280), (4, 165322710), (5, 132258168), (6, 110215140), (7, 94470120), (8, 82661355), (9, 73476760), (10, 66129084), (12, 55107570), (14, 47235060), (15, 44086056), (18, 36738380), (20, 33064542), (21, 31490040), (24, 27553785), (28, 23617530), (30, 22043028), (35, 18894024), (36, 18369190), (40, 16532271), (42, 15745020), (45, 14695352), (56, 11808765), (60, 11021514), (63, 10496680), (70, 9447012), (72, 9184595), (84, 7872510), (90, 7347676), (105, 6298008), (120, 5510757), (126, 5248340), (140, 4723506), (168, 3936255), (180, 3673838), (210, 3149004), (252, 2624170), (280, 2361753), (315, 2099336), (360, 1836919), (397, 1665720), (420, 1574502), (504, 1312085), (630, 1049668), (661, 1000440), (794, 832860), (840, 787251), (1191, 555240), (1260, 524834), (1322, 500220), (1588, 416430), (1983, 333480), (1985, 333144), (2382, 277620), (2520, 262417), (2644, 250110), (2779, 237960), (3176, 208215), (3305, 200088), (3573, 185080), (3966, 166740), (3970, 166572), (4627, 142920), (4764, 138810), (5288, 125055), (5558, 118980), (5949, 111160), (5955, 111048), (6610, 100044), (7146, 92540), (7932, 83370), (7940, 83286), (8337, 79320), (9254, 71460), (9528, 69405), (9915, 66696), (11116, 59490), (11898, 55580), (11910, 55524), (13220, 50022), (13881, 47640), (13895, 47592), (14292, 46270), (15864, 41685), (15880, 41643), (16674, 39660), (17865, 37016), (18508, 35730), (19830, 33348), (22232, 29745), (23135, 28584), (23796, 27790), (23820, 27762), (25011, 26440)]