31159557

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:143

約数の個数: 72

約数和(自身を含む): 55770624

約数和(自身を除く): 24611067

約数列:

[1, 3, 9, 11, 13, 31, 33, 39, 71, 93, 99, 117, 121, 143, 213, 279, 341, 363, 403, 429, 639, 781, 923, 1023, 1089, 1209, 1287, 1573, 2201, 2343, 2769, 3069, 3627, 3751, 4433, 4719, 6603, 7029, 8307, 8591, 10153, 11253, 13299, 14157, 19809, 24211, 25773, 28613, 30459, 33759, 39897, 48763, 72633, 77319, 85839, 91377, 111683, 146289, 217899, 257517, 266321, 314743, 335049, 438867, 798963, 944229, 1005147, 2396889, 2832687, 3462173, 10386519, 31159557]

約数ペア:

[(1, 31159557), (3, 10386519), (9, 3462173), (11, 2832687), (13, 2396889), (31, 1005147), (33, 944229), (39, 798963), (71, 438867), (93, 335049), (99, 314743), (117, 266321), (121, 257517), (143, 217899), (213, 146289), (279, 111683), (341, 91377), (363, 85839), (403, 77319), (429, 72633), (639, 48763), (781, 39897), (923, 33759), (1023, 30459), (1089, 28613), (1209, 25773), (1287, 24211), (1573, 19809), (2201, 14157), (2343, 13299), (2769, 11253), (3069, 10153), (3627, 8591), (3751, 8307), (4433, 7029), (4719, 6603)]