21178800

素因数分解:

$2^4\times 3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:117

約数の個数: 240

約数和(自身を含む): 78878880

約数和(自身を除く): 57700080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 36, 37, 40, 45, 48, 50, 53, 54, 60, 72, 74, 75, 80, 90, 100, 106, 108, 111, 120, 135, 144, 148, 150, 159, 180, 185, 200, 212, 216, 222, 225, 240, 265, 270, 296, 300, 318, 333, 360, 370, 400, 424, 432, 444, 450, 477, 530, 540, 555, 592, 600, 636, 666, 675, 720, 740, 795, 848, 888, 900, 925, 954, 999, 1060, 1080, 1110, 1200, 1272, 1325, 1332, 1350, 1431, 1480, 1590, 1665, 1776, 1800, 1850, 1908, 1961, 1998, 2120, 2160, 2220, 2385, 2544, 2650, 2664, 2700, 2775, 2862, 2960, 3180, 3330, 3600, 3700, 3816, 3922, 3975, 3996, 4240, 4440, 4770, 4995, 5300, 5328, 5400, 5550, 5724, 5883, 6360, 6660, 7155, 7400, 7632, 7844, 7950, 7992, 8325, 8880, 9540, 9805, 9990, 10600, 10800, 11100, 11448, 11766, 11925, 12720, 13320, 14310, 14800, 15688, 15900, 15984, 16650, 17649, 19080, 19610, 19980, 21200, 22200, 22896, 23532, 23850, 24975, 26640, 28620, 29415, 31376, 31800, 33300, 35298, 35775, 38160, 39220, 39960, 44400, 47064, 47700, 49025, 49950, 52947, 57240, 58830, 63600, 66600, 70596, 71550, 78440, 79920, 88245, 94128, 95400, 98050, 99900, 105894, 114480, 117660, 133200, 141192, 143100, 147075, 156880, 176490, 190800, 196100, 199800, 211788, 235320, 264735, 282384, 286200, 294150, 352980, 392200, 399600, 423576, 441225, 470640, 529470, 572400, 588300, 705960, 784400, 847152, 882450, 1058940, 1176600, 1323675, 1411920, 1764900, 2117880, 2353200, 2647350, 3529800, 4235760, 5294700, 7059600, 10589400, 21178800]

約数ペア:

[(1, 21178800), (2, 10589400), (3, 7059600), (4, 5294700), (5, 4235760), (6, 3529800), (8, 2647350), (9, 2353200), (10, 2117880), (12, 1764900), (15, 1411920), (16, 1323675), (18, 1176600), (20, 1058940), (24, 882450), (25, 847152), (27, 784400), (30, 705960), (36, 588300), (37, 572400), (40, 529470), (45, 470640), (48, 441225), (50, 423576), (53, 399600), (54, 392200), (60, 352980), (72, 294150), (74, 286200), (75, 282384), (80, 264735), (90, 235320), (100, 211788), (106, 199800), (108, 196100), (111, 190800), (120, 176490), (135, 156880), (144, 147075), (148, 143100), (150, 141192), (159, 133200), (180, 117660), (185, 114480), (200, 105894), (212, 99900), (216, 98050), (222, 95400), (225, 94128), (240, 88245), (265, 79920), (270, 78440), (296, 71550), (300, 70596), (318, 66600), (333, 63600), (360, 58830), (370, 57240), (400, 52947), (424, 49950), (432, 49025), (444, 47700), (450, 47064), (477, 44400), (530, 39960), (540, 39220), (555, 38160), (592, 35775), (600, 35298), (636, 33300), (666, 31800), (675, 31376), (720, 29415), (740, 28620), (795, 26640), (848, 24975), (888, 23850), (900, 23532), (925, 22896), (954, 22200), (999, 21200), (1060, 19980), (1080, 19610), (1110, 19080), (1200, 17649), (1272, 16650), (1325, 15984), (1332, 15900), (1350, 15688), (1431, 14800), (1480, 14310), (1590, 13320), (1665, 12720), (1776, 11925), (1800, 11766), (1850, 11448), (1908, 11100), (1961, 10800), (1998, 10600), (2120, 9990), (2160, 9805), (2220, 9540), (2385, 8880), (2544, 8325), (2650, 7992), (2664, 7950), (2700, 7844), (2775, 7632), (2862, 7400), (2960, 7155), (3180, 6660), (3330, 6360), (3600, 5883), (3700, 5724), (3816, 5550), (3922, 5400), (3975, 5328), (3996, 5300), (4240, 4995), (4440, 4770)]