19189840

素因数分解:

$2^4\times 5^1\times {\mathrm{239873}}^1$

素因数の和:239886

約数の個数: 20

約数和(自身を含む): 44616564

約数和(自身を除く): 25426724

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239873, 479746, 959492, 1199365, 1918984, 2398730, 3837968, 4797460, 9594920, 19189840]

約数ペア:

[(1, 19189840), (2, 9594920), (4, 4797460), (5, 3837968), (8, 2398730), (10, 1918984), (16, 1199365), (20, 959492), (40, 479746), (80, 239873)]