279777771

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{1619}}^1$

素因数の和:1856

約数の個数: 48

約数和(自身を含む): 500048640

約数和(自身を除く): 220270869

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 211, 273, 633, 819, 1477, 1619, 1899, 2743, 4431, 4857, 8229, 11333, 13293, 14571, 19201, 21047, 24687, 33999, 57603, 63141, 101997, 147329, 172809, 189423, 341609, 441987, 1024827, 1325961, 2391263, 3074481, 4440917, 7173789, 13322751, 21521367, 31086419, 39968253, 93259257, 279777771]

約数ペア:

[(1, 279777771), (3, 93259257), (7, 39968253), (9, 31086419), (13, 21521367), (21, 13322751), (39, 7173789), (63, 4440917), (91, 3074481), (117, 2391263), (211, 1325961), (273, 1024827), (633, 441987), (819, 341609), (1477, 189423), (1619, 172809), (1899, 147329), (2743, 101997), (4431, 63141), (4857, 57603), (8229, 33999), (11333, 24687), (13293, 21047), (14571, 19201)]