20388160

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^3\times {\mathrm{29}}^1$

素因数の和:85

約数の個数: 112

約数和(自身を含む): 54406800

約数和(自身を除く): 34018640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 29, 32, 40, 52, 58, 64, 65, 80, 104, 116, 130, 145, 160, 169, 208, 232, 260, 290, 320, 338, 377, 416, 464, 520, 580, 676, 754, 832, 845, 928, 1040, 1160, 1352, 1508, 1690, 1856, 1885, 2080, 2197, 2320, 2704, 3016, 3380, 3770, 4160, 4394, 4640, 4901, 5408, 6032, 6760, 7540, 8788, 9280, 9802, 10816, 10985, 12064, 13520, 15080, 17576, 19604, 21970, 24128, 24505, 27040, 30160, 35152, 39208, 43940, 49010, 54080, 60320, 63713, 70304, 78416, 87880, 98020, 120640, 127426, 140608, 156832, 175760, 196040, 254852, 313664, 318565, 351520, 392080, 509704, 637130, 703040, 784160, 1019408, 1274260, 1568320, 2038816, 2548520, 4077632, 5097040, 10194080, 20388160]

約数ペア:

[(1, 20388160), (2, 10194080), (4, 5097040), (5, 4077632), (8, 2548520), (10, 2038816), (13, 1568320), (16, 1274260), (20, 1019408), (26, 784160), (29, 703040), (32, 637130), (40, 509704), (52, 392080), (58, 351520), (64, 318565), (65, 313664), (80, 254852), (104, 196040), (116, 175760), (130, 156832), (145, 140608), (160, 127426), (169, 120640), (208, 98020), (232, 87880), (260, 78416), (290, 70304), (320, 63713), (338, 60320), (377, 54080), (416, 49010), (464, 43940), (520, 39208), (580, 35152), (676, 30160), (754, 27040), (832, 24505), (845, 24128), (928, 21970), (1040, 19604), (1160, 17576), (1352, 15080), (1508, 13520), (1690, 12064), (1856, 10985), (1885, 10816), (2080, 9802), (2197, 9280), (2320, 8788), (2704, 7540), (3016, 6760), (3380, 6032), (3770, 5408), (4160, 4901), (4394, 4640)]