18981850

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{5347}}^1$

素因数の和:5430

約数の個数: 24

約数和(自身を含む): 35810208

約数和(自身を除く): 16828358

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 355, 710, 1775, 3550, 5347, 10694, 26735, 53470, 133675, 267350, 379637, 759274, 1898185, 3796370, 9490925, 18981850]

約数ペア:

[(1, 18981850), (2, 9490925), (5, 3796370), (10, 1898185), (25, 759274), (50, 379637), (71, 267350), (142, 133675), (355, 53470), (710, 26735), (1775, 10694), (3550, 5347)]