21464640

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:309

約数の個数: 168

約数和(自身を含む): 76672440

約数和(自身を除く): 55207800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 32, 36, 40, 45, 48, 58, 60, 64, 72, 80, 87, 90, 96, 116, 120, 144, 145, 160, 174, 180, 192, 232, 240, 257, 261, 288, 290, 320, 348, 360, 435, 464, 480, 514, 522, 576, 580, 696, 720, 771, 870, 928, 960, 1028, 1044, 1160, 1285, 1305, 1392, 1440, 1542, 1740, 1856, 2056, 2088, 2313, 2320, 2570, 2610, 2784, 2880, 3084, 3480, 3855, 4112, 4176, 4626, 4640, 5140, 5220, 5568, 6168, 6960, 7453, 7710, 8224, 8352, 9252, 9280, 10280, 10440, 11565, 12336, 13920, 14906, 15420, 16448, 16704, 18504, 20560, 20880, 22359, 23130, 24672, 27840, 29812, 30840, 37008, 37265, 41120, 41760, 44718, 46260, 49344, 59624, 61680, 67077, 74016, 74530, 82240, 83520, 89436, 92520, 111795, 119248, 123360, 134154, 148032, 149060, 178872, 185040, 223590, 238496, 246720, 268308, 298120, 335385, 357744, 370080, 447180, 476992, 536616, 596240, 670770, 715488, 740160, 894360, 1073232, 1192480, 1341540, 1430976, 1788720, 2146464, 2384960, 2683080, 3577440, 4292928, 5366160, 7154880, 10732320, 21464640]

約数ペア:

[(1, 21464640), (2, 10732320), (3, 7154880), (4, 5366160), (5, 4292928), (6, 3577440), (8, 2683080), (9, 2384960), (10, 2146464), (12, 1788720), (15, 1430976), (16, 1341540), (18, 1192480), (20, 1073232), (24, 894360), (29, 740160), (30, 715488), (32, 670770), (36, 596240), (40, 536616), (45, 476992), (48, 447180), (58, 370080), (60, 357744), (64, 335385), (72, 298120), (80, 268308), (87, 246720), (90, 238496), (96, 223590), (116, 185040), (120, 178872), (144, 149060), (145, 148032), (160, 134154), (174, 123360), (180, 119248), (192, 111795), (232, 92520), (240, 89436), (257, 83520), (261, 82240), (288, 74530), (290, 74016), (320, 67077), (348, 61680), (360, 59624), (435, 49344), (464, 46260), (480, 44718), (514, 41760), (522, 41120), (576, 37265), (580, 37008), (696, 30840), (720, 29812), (771, 27840), (870, 24672), (928, 23130), (960, 22359), (1028, 20880), (1044, 20560), (1160, 18504), (1285, 16704), (1305, 16448), (1392, 15420), (1440, 14906), (1542, 13920), (1740, 12336), (1856, 11565), (2056, 10440), (2088, 10280), (2313, 9280), (2320, 9252), (2570, 8352), (2610, 8224), (2784, 7710), (2880, 7453), (3084, 6960), (3480, 6168), (3855, 5568), (4112, 5220), (4176, 5140), (4626, 4640)]