28180791

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{9403}}^1$

素因数の和:9452

約数の個数: 20

約数和(自身を含む): 43239592

約数和(自身を除く): 15058801

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 9403, 28209, 84627, 253881, 347911, 761643, 1043733, 3131199, 9393597, 28180791]

約数ペア:

[(1, 28180791), (3, 9393597), (9, 3131199), (27, 1043733), (37, 761643), (81, 347911), (111, 253881), (333, 84627), (999, 28209), (2997, 9403)]