28931440

素因数分解:

$2^4\times 5^1\times {\mathrm{361643}}^1$

素因数の和:361656

約数の個数: 20

約数和(自身を含む): 67265784

約数和(自身を除く): 38334344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 361643, 723286, 1446572, 1808215, 2893144, 3616430, 5786288, 7232860, 14465720, 28931440]

約数ペア:

[(1, 28931440), (2, 14465720), (4, 7232860), (5, 5786288), (8, 3616430), (10, 2893144), (16, 1808215), (20, 1446572), (40, 723286), (80, 361643)]