19990395

素因数分解:

$3^5\times 5^1\times {\mathrm{16453}}^1$

素因数の和:16473

約数の個数: 24

約数和(自身を含む): 35935536

約数和(自身を除く): 15945141

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 16453, 49359, 82265, 148077, 246795, 444231, 740385, 1332693, 2221155, 3998079, 6663465, 19990395]

約数ペア:

[(1, 19990395), (3, 6663465), (5, 3998079), (9, 2221155), (15, 1332693), (27, 740385), (45, 444231), (81, 246795), (135, 148077), (243, 82265), (405, 49359), (1215, 16453)]