20173986

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:368

約数の個数: 72

約数和(自身を含む): 51618060

約数和(自身を除く): 31444074

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 89, 98, 126, 147, 178, 257, 267, 294, 441, 514, 534, 623, 771, 801, 882, 1246, 1542, 1602, 1799, 1869, 2313, 3598, 3738, 4361, 4626, 5397, 5607, 8722, 10794, 11214, 12593, 13083, 16191, 22873, 25186, 26166, 32382, 37779, 39249, 45746, 68619, 75558, 78498, 113337, 137238, 160111, 205857, 226674, 320222, 411714, 480333, 960666, 1120777, 1440999, 2241554, 2881998, 3362331, 6724662, 10086993, 20173986]

約数ペア:

[(1, 20173986), (2, 10086993), (3, 6724662), (6, 3362331), (7, 2881998), (9, 2241554), (14, 1440999), (18, 1120777), (21, 960666), (42, 480333), (49, 411714), (63, 320222), (89, 226674), (98, 205857), (126, 160111), (147, 137238), (178, 113337), (257, 78498), (267, 75558), (294, 68619), (441, 45746), (514, 39249), (534, 37779), (623, 32382), (771, 26166), (801, 25186), (882, 22873), (1246, 16191), (1542, 13083), (1602, 12593), (1799, 11214), (1869, 10794), (2313, 8722), (3598, 5607), (3738, 5397), (4361, 4626)]