28131201

素因数分解:

$3^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{2467}}^1$

素因数の和:2661

約数の個数: 24

約数和(自身を含む): 46714304

約数和(自身を除く): 18583103

約数列:

[1, 3, 7, 9, 21, 63, 181, 543, 1267, 1629, 2467, 3801, 7401, 11403, 17269, 22203, 51807, 155421, 446527, 1339581, 3125689, 4018743, 9377067, 28131201]

約数ペア:

[(1, 28131201), (3, 9377067), (7, 4018743), (9, 3125689), (21, 1339581), (63, 446527), (181, 155421), (543, 51807), (1267, 22203), (1629, 17269), (2467, 11403), (3801, 7401)]