663981808

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^3\times {\mathrm{199}}^1$

素因数の和:307

約数の個数: 80

約数和(自身を含む): 1526886400

約数和(自身を除く): 862904592

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 112, 124, 199, 217, 248, 398, 434, 496, 796, 868, 961, 1393, 1592, 1736, 1922, 2786, 3184, 3472, 3844, 5572, 6169, 6727, 7688, 11144, 12338, 13454, 15376, 22288, 24676, 26908, 29791, 43183, 49352, 53816, 59582, 86366, 98704, 107632, 119164, 172732, 191239, 208537, 238328, 345464, 382478, 417074, 476656, 690928, 764956, 834148, 1338673, 1529912, 1668296, 2677346, 3059824, 3336592, 5354692, 5928409, 10709384, 11856818, 21418768, 23713636, 41498863, 47427272, 82997726, 94854544, 165995452, 331990904, 663981808]

約数ペア:

[(1, 663981808), (2, 331990904), (4, 165995452), (7, 94854544), (8, 82997726), (14, 47427272), (16, 41498863), (28, 23713636), (31, 21418768), (56, 11856818), (62, 10709384), (112, 5928409), (124, 5354692), (199, 3336592), (217, 3059824), (248, 2677346), (398, 1668296), (434, 1529912), (496, 1338673), (796, 834148), (868, 764956), (961, 690928), (1393, 476656), (1592, 417074), (1736, 382478), (1922, 345464), (2786, 238328), (3184, 208537), (3472, 191239), (3844, 172732), (5572, 119164), (6169, 107632), (6727, 98704), (7688, 86366), (11144, 59582), (12338, 53816), (13454, 49352), (15376, 43183), (22288, 29791), (24676, 26908)]