81284714

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 153280512

約数和(自身を除く): 71995798

約数列:

[1, 2, 7, 14, 23, 41, 46, 47, 82, 94, 131, 161, 262, 287, 322, 329, 574, 658, 917, 943, 1081, 1834, 1886, 1927, 2162, 3013, 3854, 5371, 6026, 6157, 6601, 7567, 10742, 12314, 13202, 13489, 15134, 21091, 26978, 37597, 42182, 43099, 44321, 75194, 86198, 88642, 123533, 141611, 247066, 252437, 283222, 310247, 504874, 620494, 864731, 991277, 1729462, 1767059, 1982554, 3534118, 5806051, 11612102, 40642357, 81284714]

約数ペア:

[(1, 81284714), (2, 40642357), (7, 11612102), (14, 5806051), (23, 3534118), (41, 1982554), (46, 1767059), (47, 1729462), (82, 991277), (94, 864731), (131, 620494), (161, 504874), (262, 310247), (287, 283222), (322, 252437), (329, 247066), (574, 141611), (658, 123533), (917, 88642), (943, 86198), (1081, 75194), (1834, 44321), (1886, 43099), (1927, 42182), (2162, 37597), (3013, 26978), (3854, 21091), (5371, 15134), (6026, 13489), (6157, 13202), (6601, 12314), (7567, 10742)]