21516840

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{229}}^1$

素因数の和:281

約数の個数: 160

約数和(自身を含む): 75141000

約数和(自身を除く): 53624160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 29, 30, 36, 40, 45, 54, 58, 60, 72, 81, 87, 90, 108, 116, 120, 135, 145, 162, 174, 180, 216, 229, 232, 261, 270, 290, 324, 348, 360, 405, 435, 458, 522, 540, 580, 648, 687, 696, 783, 810, 870, 916, 1044, 1080, 1145, 1160, 1305, 1374, 1566, 1620, 1740, 1832, 2061, 2088, 2290, 2349, 2610, 2748, 3132, 3240, 3435, 3480, 3915, 4122, 4580, 4698, 5220, 5496, 6183, 6264, 6641, 6870, 7830, 8244, 9160, 9396, 10305, 10440, 11745, 12366, 13282, 13740, 15660, 16488, 18549, 18792, 19923, 20610, 23490, 24732, 26564, 27480, 30915, 31320, 33205, 37098, 39846, 41220, 46980, 49464, 53128, 59769, 61830, 66410, 74196, 79692, 82440, 92745, 93960, 99615, 119538, 123660, 132820, 148392, 159384, 179307, 185490, 199230, 239076, 247320, 265640, 298845, 358614, 370980, 398460, 478152, 537921, 597690, 717228, 741960, 796920, 896535, 1075842, 1195380, 1434456, 1793070, 2151684, 2390760, 2689605, 3586140, 4303368, 5379210, 7172280, 10758420, 21516840]

約数ペア:

[(1, 21516840), (2, 10758420), (3, 7172280), (4, 5379210), (5, 4303368), (6, 3586140), (8, 2689605), (9, 2390760), (10, 2151684), (12, 1793070), (15, 1434456), (18, 1195380), (20, 1075842), (24, 896535), (27, 796920), (29, 741960), (30, 717228), (36, 597690), (40, 537921), (45, 478152), (54, 398460), (58, 370980), (60, 358614), (72, 298845), (81, 265640), (87, 247320), (90, 239076), (108, 199230), (116, 185490), (120, 179307), (135, 159384), (145, 148392), (162, 132820), (174, 123660), (180, 119538), (216, 99615), (229, 93960), (232, 92745), (261, 82440), (270, 79692), (290, 74196), (324, 66410), (348, 61830), (360, 59769), (405, 53128), (435, 49464), (458, 46980), (522, 41220), (540, 39846), (580, 37098), (648, 33205), (687, 31320), (696, 30915), (783, 27480), (810, 26564), (870, 24732), (916, 23490), (1044, 20610), (1080, 19923), (1145, 18792), (1160, 18549), (1305, 16488), (1374, 15660), (1566, 13740), (1620, 13282), (1740, 12366), (1832, 11745), (2061, 10440), (2088, 10305), (2290, 9396), (2349, 9160), (2610, 8244), (2748, 7830), (3132, 6870), (3240, 6641), (3435, 6264), (3480, 6183), (3915, 5496), (4122, 5220), (4580, 4698)]