19970955

素因数分解:

$3^6\times 5^1\times {\mathrm{5479}}^1$

素因数の和:5502

約数の個数: 28

約数和(自身を含む): 35937840

約数和(自身を除く): 15966885

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 5479, 16437, 27395, 49311, 82185, 147933, 246555, 443799, 739665, 1331397, 2218995, 3994191, 6656985, 19970955]

約数ペア:

[(1, 19970955), (3, 6656985), (5, 3994191), (9, 2218995), (15, 1331397), (27, 739665), (45, 443799), (81, 246555), (135, 147933), (243, 82185), (405, 49311), (729, 27395), (1215, 16437), (3645, 5479)]