21981006720

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{1272049}}^1$

素因数の和:1272077

約数の個数: 128

約数和(自身を含む): 77849460000

約数和(自身を除く): 55868453280

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, 1272049, 2544098, 3816147, 5088196, 6360245, 7632294, 10176392, 11448441, 12720490, 15264588, 19080735, 20352784, 22896882, 25440980, 30529176, 34345323, 38161470, 40705568, 45793764, 50881960, 57242205, 61058352, 68690646, 76322940, 81411136, 91587528, 101763920, 114484410, 122116704, 137381292, 152645880, 162822272, 171726615, 183175056, 203527840, 228968820, 244233408, 274762584, 305291760, 343453230, 366350112, 407055680, 457937640, 488466816, 549525168, 610583520, 686906460, 732700224, 814111360, 915875280, 1099050336, 1221167040, 1373812920, 1465400448, 1831750560, 2198100672, 2442334080, 2747625840, 3663501120, 4396201344, 5495251680, 7327002240, 10990503360, 21981006720]

約数ペア:

[(1, 21981006720), (2, 10990503360), (3, 7327002240), (4, 5495251680), (5, 4396201344), (6, 3663501120), (8, 2747625840), (9, 2442334080), (10, 2198100672), (12, 1831750560), (15, 1465400448), (16, 1373812920), (18, 1221167040), (20, 1099050336), (24, 915875280), (27, 814111360), (30, 732700224), (32, 686906460), (36, 610583520), (40, 549525168), (45, 488466816), (48, 457937640), (54, 407055680), (60, 366350112), (64, 343453230), (72, 305291760), (80, 274762584), (90, 244233408), (96, 228968820), (108, 203527840), (120, 183175056), (128, 171726615), (135, 162822272), (144, 152645880), (160, 137381292), (180, 122116704), (192, 114484410), (216, 101763920), (240, 91587528), (270, 81411136), (288, 76322940), (320, 68690646), (360, 61058352), (384, 57242205), (432, 50881960), (480, 45793764), (540, 40705568), (576, 38161470), (640, 34345323), (720, 30529176), (864, 25440980), (960, 22896882), (1080, 20352784), (1152, 19080735), (1440, 15264588), (1728, 12720490), (1920, 11448441), (2160, 10176392), (2880, 7632294), (3456, 6360245), (4320, 5088196), (5760, 3816147), (8640, 2544098), (17280, 1272049)]