81807208

素因数分解:

$2^3\times 7^1\times {\mathrm{401}}^1\times {\mathrm{3643}}^1$

素因数の和:4057

約数の個数: 32

約数和(自身を含む): 175786560

約数和(自身を除く): 93979352

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 401, 802, 1604, 2807, 3208, 3643, 5614, 7286, 11228, 14572, 22456, 25501, 29144, 51002, 102004, 204008, 1460843, 2921686, 5843372, 10225901, 11686744, 20451802, 40903604, 81807208]

約数ペア:

[(1, 81807208), (2, 40903604), (4, 20451802), (7, 11686744), (8, 10225901), (14, 5843372), (28, 2921686), (56, 1460843), (401, 204008), (802, 102004), (1604, 51002), (2807, 29144), (3208, 25501), (3643, 22456), (5614, 14572), (7286, 11228)]