81998325

素因数分解:

$3^4\times 5^2\times {\mathrm{40493}}^1$

素因数の和:40515

約数の個数: 30

約数和(自身を含む): 151892994

約数和(自身を除く): 69894669

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 40493, 121479, 202465, 364437, 607395, 1012325, 1093311, 1822185, 3036975, 3279933, 5466555, 9110925, 16399665, 27332775, 81998325]

約数ペア:

[(1, 81998325), (3, 27332775), (5, 16399665), (9, 9110925), (15, 5466555), (25, 3279933), (27, 3036975), (45, 1822185), (75, 1093311), (81, 1012325), (135, 607395), (225, 364437), (405, 202465), (675, 121479), (2025, 40493)]