251017731

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{3539}}^1$

素因数の和:3656

約数の個数: 32

約数和(自身を含む): 387417600

約数和(自身を除く): 136399869

約数列:

[1, 3, 9, 27, 37, 71, 111, 213, 333, 639, 999, 1917, 2627, 3539, 7881, 10617, 23643, 31851, 70929, 95553, 130943, 251269, 392829, 753807, 1178487, 2261421, 3535461, 6784263, 9296953, 27890859, 83672577, 251017731]

約数ペア:

[(1, 251017731), (3, 83672577), (9, 27890859), (27, 9296953), (37, 6784263), (71, 3535461), (111, 2261421), (213, 1178487), (333, 753807), (639, 392829), (999, 251269), (1917, 130943), (2627, 95553), (3539, 70929), (7881, 31851), (10617, 23643)]