21000401280

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{1215301}}^1$

素因数の和:1215329

約数の個数: 128

約数和(自身を含む): 74376482400

約数和(自身を除く): 53376081120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 864, 960, 1080, 1152, 1440, 1728, 1920, 2160, 2880, 3456, 4320, 5760, 8640, 17280, 1215301, 2430602, 3645903, 4861204, 6076505, 7291806, 9722408, 10937709, 12153010, 14583612, 18229515, 19444816, 21875418, 24306020, 29167224, 32813127, 36459030, 38889632, 43750836, 48612040, 54688545, 58334448, 65626254, 72918060, 77779264, 87501672, 97224080, 109377090, 116668896, 131252508, 145836120, 155558528, 164065635, 175003344, 194448160, 218754180, 233337792, 262505016, 291672240, 328131270, 350006688, 388896320, 437508360, 466675584, 525010032, 583344480, 656262540, 700013376, 777792640, 875016720, 1050020064, 1166688960, 1312525080, 1400026752, 1750033440, 2100040128, 2333377920, 2625050160, 3500066880, 4200080256, 5250100320, 7000133760, 10500200640, 21000401280]

約数ペア:

[(1, 21000401280), (2, 10500200640), (3, 7000133760), (4, 5250100320), (5, 4200080256), (6, 3500066880), (8, 2625050160), (9, 2333377920), (10, 2100040128), (12, 1750033440), (15, 1400026752), (16, 1312525080), (18, 1166688960), (20, 1050020064), (24, 875016720), (27, 777792640), (30, 700013376), (32, 656262540), (36, 583344480), (40, 525010032), (45, 466675584), (48, 437508360), (54, 388896320), (60, 350006688), (64, 328131270), (72, 291672240), (80, 262505016), (90, 233337792), (96, 218754180), (108, 194448160), (120, 175003344), (128, 164065635), (135, 155558528), (144, 145836120), (160, 131252508), (180, 116668896), (192, 109377090), (216, 97224080), (240, 87501672), (270, 77779264), (288, 72918060), (320, 65626254), (360, 58334448), (384, 54688545), (432, 48612040), (480, 43750836), (540, 38889632), (576, 36459030), (640, 32813127), (720, 29167224), (864, 24306020), (960, 21875418), (1080, 19444816), (1152, 18229515), (1440, 14583612), (1728, 12153010), (1920, 10937709), (2160, 9722408), (2880, 7291806), (3456, 6076505), (4320, 4861204), (5760, 3645903), (8640, 2430602), (17280, 1215301)]