28078893

素因数分解:

$3^7\times {\mathrm{37}}^1\times {\mathrm{347}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 43374720

約数和(自身を除く): 15295827

約数列:

[1, 3, 9, 27, 37, 81, 111, 243, 333, 347, 729, 999, 1041, 2187, 2997, 3123, 8991, 9369, 12839, 26973, 28107, 38517, 80919, 84321, 115551, 252963, 346653, 758889, 1039959, 3119877, 9359631, 28078893]

約数ペア:

[(1, 28078893), (3, 9359631), (9, 3119877), (27, 1039959), (37, 758889), (81, 346653), (111, 252963), (243, 115551), (333, 84321), (347, 80919), (729, 38517), (999, 28107), (1041, 26973), (2187, 12839), (2997, 9369), (3123, 8991)]