286721991

素因数分解:

$3^3\times {\mathrm{37}}^2\times {\mathrm{7757}}^1$

素因数の和:7840

約数の個数: 24

約数和(自身を含む): 436620240

約数和(自身を除く): 149898249

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 1369, 4107, 7757, 12321, 23271, 36963, 69813, 209439, 287009, 861027, 2583081, 7749243, 10619333, 31857999, 95573997, 286721991]

約数ペア:

[(1, 286721991), (3, 95573997), (9, 31857999), (27, 10619333), (37, 7749243), (111, 2583081), (333, 861027), (999, 287009), (1369, 209439), (4107, 69813), (7757, 36963), (12321, 23271)]