28036989

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:143

約数の個数: 64

約数和(自身を含む): 47308800

約数和(自身を除く): 19271811

約数列:

[1, 3, 9, 19, 27, 31, 41, 43, 57, 93, 123, 129, 171, 279, 369, 387, 513, 589, 779, 817, 837, 1107, 1161, 1271, 1333, 1763, 1767, 2337, 2451, 3813, 3999, 5289, 5301, 7011, 7353, 11439, 11997, 15867, 15903, 21033, 22059, 24149, 25327, 33497, 34317, 35991, 47601, 54653, 72447, 75981, 100491, 163959, 217341, 227943, 301473, 491877, 652023, 683829, 904419, 1038407, 1475631, 3115221, 9345663, 28036989]

約数ペア:

[(1, 28036989), (3, 9345663), (9, 3115221), (19, 1475631), (27, 1038407), (31, 904419), (41, 683829), (43, 652023), (57, 491877), (93, 301473), (123, 227943), (129, 217341), (171, 163959), (279, 100491), (369, 75981), (387, 72447), (513, 54653), (589, 47601), (779, 35991), (817, 34317), (837, 33497), (1107, 25327), (1161, 24149), (1271, 22059), (1333, 21033), (1763, 15903), (1767, 15867), (2337, 11997), (2451, 11439), (3813, 7353), (3999, 7011), (5289, 5301)]