21147840

素因数分解:

$2^6\times 3^2\times 5^1\times 7^1\times {\mathrm{1049}}^1$

素因数の和:1079

約数の個数: 168

約数和(自身を含む): 83210400

約数和(自身を除く): 62062560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 420, 448, 480, 504, 560, 576, 630, 672, 720, 840, 960, 1008, 1049, 1120, 1260, 1344, 1440, 1680, 2016, 2098, 2240, 2520, 2880, 3147, 3360, 4032, 4196, 5040, 5245, 6294, 6720, 7343, 8392, 9441, 10080, 10490, 12588, 14686, 15735, 16784, 18882, 20160, 20980, 22029, 25176, 29372, 31470, 33568, 36715, 37764, 41960, 44058, 47205, 50352, 58744, 62940, 66087, 67136, 73430, 75528, 83920, 88116, 94410, 100704, 110145, 117488, 125880, 132174, 146860, 151056, 167840, 176232, 188820, 201408, 220290, 234976, 251760, 264348, 293720, 302112, 330435, 335680, 352464, 377640, 440580, 469952, 503520, 528696, 587440, 604224, 660870, 704928, 755280, 881160, 1007040, 1057392, 1174880, 1321740, 1409856, 1510560, 1762320, 2114784, 2349760, 2643480, 3021120, 3524640, 4229568, 5286960, 7049280, 10573920, 21147840]

約数ペア:

[(1, 21147840), (2, 10573920), (3, 7049280), (4, 5286960), (5, 4229568), (6, 3524640), (7, 3021120), (8, 2643480), (9, 2349760), (10, 2114784), (12, 1762320), (14, 1510560), (15, 1409856), (16, 1321740), (18, 1174880), (20, 1057392), (21, 1007040), (24, 881160), (28, 755280), (30, 704928), (32, 660870), (35, 604224), (36, 587440), (40, 528696), (42, 503520), (45, 469952), (48, 440580), (56, 377640), (60, 352464), (63, 335680), (64, 330435), (70, 302112), (72, 293720), (80, 264348), (84, 251760), (90, 234976), (96, 220290), (105, 201408), (112, 188820), (120, 176232), (126, 167840), (140, 151056), (144, 146860), (160, 132174), (168, 125880), (180, 117488), (192, 110145), (210, 100704), (224, 94410), (240, 88116), (252, 83920), (280, 75528), (288, 73430), (315, 67136), (320, 66087), (336, 62940), (360, 58744), (420, 50352), (448, 47205), (480, 44058), (504, 41960), (560, 37764), (576, 36715), (630, 33568), (672, 31470), (720, 29372), (840, 25176), (960, 22029), (1008, 20980), (1049, 20160), (1120, 18882), (1260, 16784), (1344, 15735), (1440, 14686), (1680, 12588), (2016, 10490), (2098, 10080), (2240, 9441), (2520, 8392), (2880, 7343), (3147, 6720), (3360, 6294), (4032, 5245), (4196, 5040)]