51239979

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^2\times {\mathrm{751}}^1$

素因数の和:805

約数の個数: 48

約数和(自身を含む): 91683840

約数和(自身を除く): 40443861

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 361, 399, 513, 751, 1083, 1197, 2253, 2527, 3249, 3591, 5257, 6759, 7581, 9747, 14269, 15771, 20277, 22743, 42807, 47313, 68229, 99883, 128421, 141939, 271111, 299649, 385263, 813333, 898947, 1897777, 2439999, 2696841, 5693331, 7319997, 17079993, 51239979]

約数ペア:

[(1, 51239979), (3, 17079993), (7, 7319997), (9, 5693331), (19, 2696841), (21, 2439999), (27, 1897777), (57, 898947), (63, 813333), (133, 385263), (171, 299649), (189, 271111), (361, 141939), (399, 128421), (513, 99883), (751, 68229), (1083, 47313), (1197, 42807), (2253, 22743), (2527, 20277), (3249, 15771), (3591, 14269), (5257, 9747), (6759, 7581)]