21784320

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:119

約数の個数: 216

約数和(自身を含む): 79078272

約数和(自身を除く): 57293952

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 32, 36, 40, 45, 48, 60, 61, 62, 64, 72, 80, 90, 93, 96, 120, 122, 124, 128, 144, 155, 160, 180, 183, 186, 192, 240, 244, 248, 256, 279, 288, 305, 310, 320, 360, 366, 372, 384, 465, 480, 488, 496, 549, 558, 576, 610, 620, 640, 720, 732, 744, 768, 915, 930, 960, 976, 992, 1098, 1116, 1152, 1220, 1240, 1280, 1395, 1440, 1464, 1488, 1830, 1860, 1891, 1920, 1952, 1984, 2196, 2232, 2304, 2440, 2480, 2745, 2790, 2880, 2928, 2976, 3660, 3720, 3782, 3840, 3904, 3968, 4392, 4464, 4880, 4960, 5490, 5580, 5673, 5760, 5856, 5952, 7320, 7440, 7564, 7808, 7936, 8784, 8928, 9455, 9760, 9920, 10980, 11160, 11346, 11520, 11712, 11904, 14640, 14880, 15128, 15616, 17019, 17568, 17856, 18910, 19520, 19840, 21960, 22320, 22692, 23424, 23808, 28365, 29280, 29760, 30256, 34038, 35136, 35712, 37820, 39040, 39680, 43920, 44640, 45384, 46848, 56730, 58560, 59520, 60512, 68076, 70272, 71424, 75640, 78080, 85095, 87840, 89280, 90768, 113460, 117120, 119040, 121024, 136152, 140544, 151280, 170190, 175680, 178560, 181536, 226920, 234240, 242048, 272304, 302560, 340380, 351360, 357120, 363072, 453840, 484096, 544608, 605120, 680760, 702720, 726144, 907680, 1089216, 1210240, 1361520, 1452288, 1815360, 2178432, 2420480, 2723040, 3630720, 4356864, 5446080, 7261440, 10892160, 21784320]

約数ペア:

[(1, 21784320), (2, 10892160), (3, 7261440), (4, 5446080), (5, 4356864), (6, 3630720), (8, 2723040), (9, 2420480), (10, 2178432), (12, 1815360), (15, 1452288), (16, 1361520), (18, 1210240), (20, 1089216), (24, 907680), (30, 726144), (31, 702720), (32, 680760), (36, 605120), (40, 544608), (45, 484096), (48, 453840), (60, 363072), (61, 357120), (62, 351360), (64, 340380), (72, 302560), (80, 272304), (90, 242048), (93, 234240), (96, 226920), (120, 181536), (122, 178560), (124, 175680), (128, 170190), (144, 151280), (155, 140544), (160, 136152), (180, 121024), (183, 119040), (186, 117120), (192, 113460), (240, 90768), (244, 89280), (248, 87840), (256, 85095), (279, 78080), (288, 75640), (305, 71424), (310, 70272), (320, 68076), (360, 60512), (366, 59520), (372, 58560), (384, 56730), (465, 46848), (480, 45384), (488, 44640), (496, 43920), (549, 39680), (558, 39040), (576, 37820), (610, 35712), (620, 35136), (640, 34038), (720, 30256), (732, 29760), (744, 29280), (768, 28365), (915, 23808), (930, 23424), (960, 22692), (976, 22320), (992, 21960), (1098, 19840), (1116, 19520), (1152, 18910), (1220, 17856), (1240, 17568), (1280, 17019), (1395, 15616), (1440, 15128), (1464, 14880), (1488, 14640), (1830, 11904), (1860, 11712), (1891, 11520), (1920, 11346), (1952, 11160), (1984, 10980), (2196, 9920), (2232, 9760), (2304, 9455), (2440, 8928), (2480, 8784), (2745, 7936), (2790, 7808), (2880, 7564), (2928, 7440), (2976, 7320), (3660, 5952), (3720, 5856), (3782, 5760), (3840, 5673), (3904, 5580), (3968, 5490), (4392, 4960), (4464, 4880)]