257642973

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{2207}}^1$

素因数の和:2346

約数の個数: 48

約数和(自身を含む): 454671360

約数和(自身を除く): 197028387

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 109, 119, 153, 327, 357, 763, 981, 1071, 1853, 2207, 2289, 5559, 6621, 6867, 12971, 15449, 16677, 19863, 37519, 38913, 46347, 112557, 116739, 139041, 240563, 262633, 337671, 721689, 787899, 1683941, 2165067, 2363697, 4089571, 5051823, 12268713, 15155469, 28626997, 36806139, 85880991, 257642973]

約数ペア:

[(1, 257642973), (3, 85880991), (7, 36806139), (9, 28626997), (17, 15155469), (21, 12268713), (51, 5051823), (63, 4089571), (109, 2363697), (119, 2165067), (153, 1683941), (327, 787899), (357, 721689), (763, 337671), (981, 262633), (1071, 240563), (1853, 139041), (2207, 116739), (2289, 112557), (5559, 46347), (6621, 38913), (6867, 37519), (12971, 19863), (15449, 16677)]