21487200

素因数分解:

$2^5\times 3^1\times 5^2\times 7^1\times {\mathrm{1279}}^1$

素因数の和:1309

約数の個数: 144

約数和(自身を含む): 79994880

約数和(自身を除く): 58507680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 32, 35, 40, 42, 48, 50, 56, 60, 70, 75, 80, 84, 96, 100, 105, 112, 120, 140, 150, 160, 168, 175, 200, 210, 224, 240, 280, 300, 336, 350, 400, 420, 480, 525, 560, 600, 672, 700, 800, 840, 1050, 1120, 1200, 1279, 1400, 1680, 2100, 2400, 2558, 2800, 3360, 3837, 4200, 5116, 5600, 6395, 7674, 8400, 8953, 10232, 12790, 15348, 16800, 17906, 19185, 20464, 25580, 26859, 30696, 31975, 35812, 38370, 40928, 44765, 51160, 53718, 61392, 63950, 71624, 76740, 89530, 95925, 102320, 107436, 122784, 127900, 134295, 143248, 153480, 179060, 191850, 204640, 214872, 223825, 255800, 268590, 286496, 306960, 358120, 383700, 429744, 447650, 511600, 537180, 613920, 671475, 716240, 767400, 859488, 895300, 1023200, 1074360, 1342950, 1432480, 1534800, 1790600, 2148720, 2685900, 3069600, 3581200, 4297440, 5371800, 7162400, 10743600, 21487200]

約数ペア:

[(1, 21487200), (2, 10743600), (3, 7162400), (4, 5371800), (5, 4297440), (6, 3581200), (7, 3069600), (8, 2685900), (10, 2148720), (12, 1790600), (14, 1534800), (15, 1432480), (16, 1342950), (20, 1074360), (21, 1023200), (24, 895300), (25, 859488), (28, 767400), (30, 716240), (32, 671475), (35, 613920), (40, 537180), (42, 511600), (48, 447650), (50, 429744), (56, 383700), (60, 358120), (70, 306960), (75, 286496), (80, 268590), (84, 255800), (96, 223825), (100, 214872), (105, 204640), (112, 191850), (120, 179060), (140, 153480), (150, 143248), (160, 134295), (168, 127900), (175, 122784), (200, 107436), (210, 102320), (224, 95925), (240, 89530), (280, 76740), (300, 71624), (336, 63950), (350, 61392), (400, 53718), (420, 51160), (480, 44765), (525, 40928), (560, 38370), (600, 35812), (672, 31975), (700, 30696), (800, 26859), (840, 25580), (1050, 20464), (1120, 19185), (1200, 17906), (1279, 16800), (1400, 15348), (1680, 12790), (2100, 10232), (2400, 8953), (2558, 8400), (2800, 7674), (3360, 6395), (3837, 5600), (4200, 5116)]