28173807

素因数分解:

$3^2\times {\mathrm{127}}^1\times {\mathrm{157}}^2$

素因数の和:447

約数の個数: 18

約数和(自身を含む): 41278848

約数和(自身を除く): 13105041

約数列:

[1, 3, 9, 127, 157, 381, 471, 1143, 1413, 19939, 24649, 59817, 73947, 179451, 221841, 3130423, 9391269, 28173807]

約数ペア:

[(1, 28173807), (3, 9391269), (9, 3130423), (127, 221841), (157, 179451), (381, 73947), (471, 59817), (1143, 24649), (1413, 19939)]