20964960

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:258

約数の個数: 192

約数和(自身を含む): 76930560

約数和(自身を除く): 55965600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 32, 36, 40, 45, 46, 48, 54, 60, 69, 72, 80, 90, 92, 96, 108, 115, 120, 135, 138, 144, 160, 180, 184, 207, 211, 216, 230, 240, 270, 276, 288, 345, 360, 368, 414, 422, 432, 460, 480, 540, 552, 621, 633, 690, 720, 736, 828, 844, 864, 920, 1035, 1055, 1080, 1104, 1242, 1266, 1380, 1440, 1656, 1688, 1840, 1899, 2070, 2110, 2160, 2208, 2484, 2532, 2760, 3105, 3165, 3312, 3376, 3680, 3798, 4140, 4220, 4320, 4853, 4968, 5064, 5520, 5697, 6210, 6330, 6624, 6752, 7596, 8280, 8440, 9495, 9706, 9936, 10128, 11040, 11394, 12420, 12660, 14559, 15192, 16560, 16880, 18990, 19412, 19872, 20256, 22788, 24265, 24840, 25320, 28485, 29118, 30384, 33120, 33760, 37980, 38824, 43677, 45576, 48530, 49680, 50640, 56970, 58236, 60768, 72795, 75960, 77648, 87354, 91152, 97060, 99360, 101280, 113940, 116472, 131031, 145590, 151920, 155296, 174708, 182304, 194120, 218385, 227880, 232944, 262062, 291180, 303840, 349416, 388240, 436770, 455760, 465888, 524124, 582360, 655155, 698832, 776480, 873540, 911520, 1048248, 1164720, 1310310, 1397664, 1747080, 2096496, 2329440, 2620620, 3494160, 4192992, 5241240, 6988320, 10482480, 20964960]

約数ペア:

[(1, 20964960), (2, 10482480), (3, 6988320), (4, 5241240), (5, 4192992), (6, 3494160), (8, 2620620), (9, 2329440), (10, 2096496), (12, 1747080), (15, 1397664), (16, 1310310), (18, 1164720), (20, 1048248), (23, 911520), (24, 873540), (27, 776480), (30, 698832), (32, 655155), (36, 582360), (40, 524124), (45, 465888), (46, 455760), (48, 436770), (54, 388240), (60, 349416), (69, 303840), (72, 291180), (80, 262062), (90, 232944), (92, 227880), (96, 218385), (108, 194120), (115, 182304), (120, 174708), (135, 155296), (138, 151920), (144, 145590), (160, 131031), (180, 116472), (184, 113940), (207, 101280), (211, 99360), (216, 97060), (230, 91152), (240, 87354), (270, 77648), (276, 75960), (288, 72795), (345, 60768), (360, 58236), (368, 56970), (414, 50640), (422, 49680), (432, 48530), (460, 45576), (480, 43677), (540, 38824), (552, 37980), (621, 33760), (633, 33120), (690, 30384), (720, 29118), (736, 28485), (828, 25320), (844, 24840), (864, 24265), (920, 22788), (1035, 20256), (1055, 19872), (1080, 19412), (1104, 18990), (1242, 16880), (1266, 16560), (1380, 15192), (1440, 14559), (1656, 12660), (1688, 12420), (1840, 11394), (1899, 11040), (2070, 10128), (2110, 9936), (2160, 9706), (2208, 9495), (2484, 8440), (2532, 8280), (2760, 7596), (3105, 6752), (3165, 6624), (3312, 6330), (3376, 6210), (3680, 5697), (3798, 5520), (4140, 5064), (4220, 4968), (4320, 4853)]