20925520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:153

約数の個数: 160

約数和(自身を含む): 62853120

約数和(自身を除く): 41927600

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 43, 44, 55, 56, 70, 77, 79, 80, 86, 88, 110, 112, 140, 154, 158, 172, 176, 215, 220, 280, 301, 308, 316, 344, 385, 395, 430, 440, 473, 553, 560, 602, 616, 632, 688, 770, 790, 860, 869, 880, 946, 1106, 1204, 1232, 1264, 1505, 1540, 1580, 1720, 1738, 1892, 2212, 2365, 2408, 2765, 3010, 3080, 3160, 3311, 3397, 3440, 3476, 3784, 4345, 4424, 4730, 4816, 5530, 6020, 6083, 6160, 6320, 6622, 6794, 6952, 7568, 8690, 8848, 9460, 11060, 12040, 12166, 13244, 13588, 13904, 16555, 16985, 17380, 18920, 22120, 23779, 24080, 24332, 26488, 27176, 30415, 33110, 33970, 34760, 37367, 37840, 44240, 47558, 48664, 52976, 54352, 60830, 66220, 67940, 69520, 74734, 95116, 97328, 118895, 121660, 132440, 135880, 149468, 186835, 190232, 237790, 243320, 261569, 264880, 271760, 298936, 373670, 380464, 475580, 486640, 523138, 597872, 747340, 951160, 1046276, 1307845, 1494680, 1902320, 2092552, 2615690, 2989360, 4185104, 5231380, 10462760, 20925520]

約数ペア:

[(1, 20925520), (2, 10462760), (4, 5231380), (5, 4185104), (7, 2989360), (8, 2615690), (10, 2092552), (11, 1902320), (14, 1494680), (16, 1307845), (20, 1046276), (22, 951160), (28, 747340), (35, 597872), (40, 523138), (43, 486640), (44, 475580), (55, 380464), (56, 373670), (70, 298936), (77, 271760), (79, 264880), (80, 261569), (86, 243320), (88, 237790), (110, 190232), (112, 186835), (140, 149468), (154, 135880), (158, 132440), (172, 121660), (176, 118895), (215, 97328), (220, 95116), (280, 74734), (301, 69520), (308, 67940), (316, 66220), (344, 60830), (385, 54352), (395, 52976), (430, 48664), (440, 47558), (473, 44240), (553, 37840), (560, 37367), (602, 34760), (616, 33970), (632, 33110), (688, 30415), (770, 27176), (790, 26488), (860, 24332), (869, 24080), (880, 23779), (946, 22120), (1106, 18920), (1204, 17380), (1232, 16985), (1264, 16555), (1505, 13904), (1540, 13588), (1580, 13244), (1720, 12166), (1738, 12040), (1892, 11060), (2212, 9460), (2365, 8848), (2408, 8690), (2765, 7568), (3010, 6952), (3080, 6794), (3160, 6622), (3311, 6320), (3397, 6160), (3440, 6083), (3476, 6020), (3784, 5530), (4345, 4816), (4424, 4730)]