16540840

素因数分解:

$2^3\times 5^1\times {\mathrm{413521}}^1$

素因数の和:413532

約数の個数: 16

約数和(自身を含む): 37216980

約数和(自身を除く): 20676140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 413521, 827042, 1654084, 2067605, 3308168, 4135210, 8270420, 16540840]

約数ペア:

[(1, 16540840), (2, 8270420), (4, 4135210), (5, 3308168), (8, 2067605), (10, 1654084), (20, 827042), (40, 413521)]