28725879

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{757}}^1$

素因数の和:919

約数の個数: 32

約数和(自身を含む): 47541760

約数和(自身を除く): 18815881

約数列:

[1, 3, 7, 13, 21, 39, 91, 139, 273, 417, 757, 973, 1807, 2271, 2919, 5299, 5421, 9841, 12649, 15897, 29523, 37947, 68887, 105223, 206661, 315669, 736561, 1367899, 2209683, 4103697, 9575293, 28725879]

約数ペア:

[(1, 28725879), (3, 9575293), (7, 4103697), (13, 2209683), (21, 1367899), (39, 736561), (91, 315669), (139, 206661), (273, 105223), (417, 68887), (757, 37947), (973, 29523), (1807, 15897), (2271, 12649), (2919, 9841), (5299, 5421)]