19903185

素因数分解:

$3^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{389}}^1$

素因数の和:782

約数の個数: 32

約数和(自身を含む): 35568000

約数和(自身を除く): 15664815

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 379, 389, 1137, 1167, 1895, 1945, 3411, 3501, 5685, 5835, 10233, 10503, 17055, 17505, 51165, 52515, 147431, 442293, 737155, 1326879, 2211465, 3980637, 6634395, 19903185]

約数ペア:

[(1, 19903185), (3, 6634395), (5, 3980637), (9, 2211465), (15, 1326879), (27, 737155), (45, 442293), (135, 147431), (379, 52515), (389, 51165), (1137, 17505), (1167, 17055), (1895, 10503), (1945, 10233), (3411, 5835), (3501, 5685)]