28257831

素因数分解:

$3^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1787}}^1$

素因数の和:2051

約数の個数: 24

約数和(自身を含む): 46859904

約数和(自身を除く): 18602073

約数列:

[1, 3, 7, 9, 21, 63, 251, 753, 1757, 1787, 2259, 5271, 5361, 12509, 15813, 16083, 37527, 112581, 448537, 1345611, 3139759, 4036833, 9419277, 28257831]

約数ペア:

[(1, 28257831), (3, 9419277), (7, 4036833), (9, 3139759), (21, 1345611), (63, 448537), (251, 112581), (753, 37527), (1757, 16083), (1787, 15813), (2259, 12509), (5271, 5361)]