21987815040

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{1272443}}^1$

素因数の和:1272471

約数の個数: 128

約数和(自身を含む): 77873572800

約数和(自身を除く): 55885757760

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, 1272443, 2544886, 3817329, 5089772, 6362215, 7634658, 10179544, 11451987, 12724430, 15269316, 19086645, 20359088, 22903974, 25448860, 30538632, 34355961, 38173290, 40718176, 45807948, 50897720, 57259935, 61077264, 68711922, 76346580, 81436352, 91615896, 101795440, 114519870, 122154528, 137423844, 152693160, 162872704, 171779805, 183231792, 203590880, 229039740, 244309056, 274847688, 305386320, 343559610, 366463584, 407181760, 458079480, 488618112, 549695376, 610772640, 687119220, 732927168, 814363520, 916158960, 1099390752, 1221545280, 1374238440, 1465854336, 1832317920, 2198781504, 2443090560, 2748476880, 3664635840, 4397563008, 5496953760, 7329271680, 10993907520, 21987815040]

約数ペア:

[(1, 21987815040), (2, 10993907520), (3, 7329271680), (4, 5496953760), (5, 4397563008), (6, 3664635840), (8, 2748476880), (9, 2443090560), (10, 2198781504), (12, 1832317920), (15, 1465854336), (16, 1374238440), (18, 1221545280), (20, 1099390752), (24, 916158960), (27, 814363520), (30, 732927168), (32, 687119220), (36, 610772640), (40, 549695376), (45, 488618112), (48, 458079480), (54, 407181760), (60, 366463584), (64, 343559610), (72, 305386320), (80, 274847688), (90, 244309056), (96, 229039740), (108, 203590880), (120, 183231792), (128, 171779805), (135, 162872704), (144, 152693160), (160, 137423844), (180, 122154528), (192, 114519870), (216, 101795440), (240, 91615896), (270, 81436352), (288, 76346580), (320, 68711922), (360, 61077264), (384, 57259935), (432, 50897720), (480, 45807948), (540, 40718176), (576, 38173290), (640, 34355961), (720, 30538632), (864, 25448860), (960, 22903974), (1080, 20359088), (1152, 19086645), (1440, 15269316), (1728, 12724430), (1920, 11451987), (2160, 10179544), (2880, 7634658), (3456, 6362215), (4320, 5089772), (5760, 3817329), (8640, 2544886), (17280, 1272443)]