21487680

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{829}}^1$

素因数の和:858

約数の個数: 140

約数和(自身を含む): 76527660

約数和(自身を除く): 55039980

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 192, 216, 240, 270, 288, 320, 324, 360, 405, 432, 480, 540, 576, 648, 720, 810, 829, 864, 960, 1080, 1296, 1440, 1620, 1658, 1728, 2160, 2487, 2592, 2880, 3240, 3316, 4145, 4320, 4974, 5184, 6480, 6632, 7461, 8290, 8640, 9948, 12435, 12960, 13264, 14922, 16580, 19896, 22383, 24870, 25920, 26528, 29844, 33160, 37305, 39792, 44766, 49740, 53056, 59688, 66320, 67149, 74610, 79584, 89532, 99480, 111915, 119376, 132640, 134298, 149220, 159168, 179064, 198960, 223830, 238752, 265280, 268596, 298440, 335745, 358128, 397920, 447660, 477504, 537192, 596880, 671490, 716256, 795840, 895320, 1074384, 1193760, 1342980, 1432512, 1790640, 2148768, 2387520, 2685960, 3581280, 4297536, 5371920, 7162560, 10743840, 21487680]

約数ペア:

[(1, 21487680), (2, 10743840), (3, 7162560), (4, 5371920), (5, 4297536), (6, 3581280), (8, 2685960), (9, 2387520), (10, 2148768), (12, 1790640), (15, 1432512), (16, 1342980), (18, 1193760), (20, 1074384), (24, 895320), (27, 795840), (30, 716256), (32, 671490), (36, 596880), (40, 537192), (45, 477504), (48, 447660), (54, 397920), (60, 358128), (64, 335745), (72, 298440), (80, 268596), (81, 265280), (90, 238752), (96, 223830), (108, 198960), (120, 179064), (135, 159168), (144, 149220), (160, 134298), (162, 132640), (180, 119376), (192, 111915), (216, 99480), (240, 89532), (270, 79584), (288, 74610), (320, 67149), (324, 66320), (360, 59688), (405, 53056), (432, 49740), (480, 44766), (540, 39792), (576, 37305), (648, 33160), (720, 29844), (810, 26528), (829, 25920), (864, 24870), (960, 22383), (1080, 19896), (1296, 16580), (1440, 14922), (1620, 13264), (1658, 12960), (1728, 12435), (2160, 9948), (2487, 8640), (2592, 8290), (2880, 7461), (3240, 6632), (3316, 6480), (4145, 5184), (4320, 4974)]