81615825

素因数分解:

$3^2\times 5^2\times {\mathrm{73}}^1\times {\mathrm{4969}}^1$

素因数の和:5058

約数の個数: 36

約数和(自身を含む): 148215340

約数和(自身を除く): 66599515

約数列:

[1, 3, 5, 9, 15, 25, 45, 73, 75, 219, 225, 365, 657, 1095, 1825, 3285, 4969, 5475, 14907, 16425, 24845, 44721, 74535, 124225, 223605, 362737, 372675, 1088211, 1118025, 1813685, 3264633, 5441055, 9068425, 16323165, 27205275, 81615825]

約数ペア:

[(1, 81615825), (3, 27205275), (5, 16323165), (9, 9068425), (15, 5441055), (25, 3264633), (45, 1813685), (73, 1118025), (75, 1088211), (219, 372675), (225, 362737), (365, 223605), (657, 124225), (1095, 74535), (1825, 44721), (3285, 24845), (4969, 16425), (5475, 14907)]