20397100

素因数分解:

$2^2\times 5^2\times {\mathrm{203971}}^1$

素因数の和:203985

約数の個数: 18

約数和(自身を含む): 44261924

約数和(自身を除く): 23864824

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 203971, 407942, 815884, 1019855, 2039710, 4079420, 5099275, 10198550, 20397100]

約数ペア:

[(1, 20397100), (2, 10198550), (4, 5099275), (5, 4079420), (10, 2039710), (20, 1019855), (25, 815884), (50, 407942), (100, 203971)]