21480480

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{2131}}^1$

素因数の和:2159

約数の個数: 144

約数和(自身を含む): 83813184

約数和(自身を除く): 62332704

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, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2131, 2520, 3360, 4262, 5040, 6393, 8524, 10080, 10655, 12786, 14917, 17048, 19179, 21310, 25572, 29834, 31965, 34096, 38358, 42620, 44751, 51144, 59668, 63930, 68192, 74585, 76716, 85240, 89502, 95895, 102288, 119336, 127860, 134253, 149170, 153432, 170480, 179004, 191790, 204576, 223755, 238672, 255720, 268506, 298340, 306864, 340960, 358008, 383580, 447510, 477344, 511440, 537012, 596680, 613728, 671265, 716016, 767160, 895020, 1022880, 1074024, 1193360, 1342530, 1432032, 1534320, 1790040, 2148048, 2386720, 2685060, 3068640, 3580080, 4296096, 5370120, 7160160, 10740240, 21480480]

約数ペア:

[(1, 21480480), (2, 10740240), (3, 7160160), (4, 5370120), (5, 4296096), (6, 3580080), (7, 3068640), (8, 2685060), (9, 2386720), (10, 2148048), (12, 1790040), (14, 1534320), (15, 1432032), (16, 1342530), (18, 1193360), (20, 1074024), (21, 1022880), (24, 895020), (28, 767160), (30, 716016), (32, 671265), (35, 613728), (36, 596680), (40, 537012), (42, 511440), (45, 477344), (48, 447510), (56, 383580), (60, 358008), (63, 340960), (70, 306864), (72, 298340), (80, 268506), (84, 255720), (90, 238672), (96, 223755), (105, 204576), (112, 191790), (120, 179004), (126, 170480), (140, 153432), (144, 149170), (160, 134253), (168, 127860), (180, 119336), (210, 102288), (224, 95895), (240, 89502), (252, 85240), (280, 76716), (288, 74585), (315, 68192), (336, 63930), (360, 59668), (420, 51144), (480, 44751), (504, 42620), (560, 38358), (630, 34096), (672, 31965), (720, 29834), (840, 25572), (1008, 21310), (1120, 19179), (1260, 17048), (1440, 14917), (1680, 12786), (2016, 10655), (2131, 10080), (2520, 8524), (3360, 6393), (4262, 5040)]