90640840

素因数分解:

$2^3\times 5^1\times {\mathrm{2266021}}^1$

素因数の和:2266032

約数の個数: 16

約数和(自身を含む): 203941980

約数和(自身を除く): 113301140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2266021, 4532042, 9064084, 11330105, 18128168, 22660210, 45320420, 90640840]

約数ペア:

[(1, 90640840), (2, 45320420), (4, 22660210), (5, 18128168), (8, 11330105), (10, 9064084), (20, 4532042), (40, 2266021)]