13578640

素因数分解:

$2^4\times 5^1\times {\mathrm{169733}}^1$

素因数の和:169746

約数の個数: 20

約数和(自身を含む): 31570524

約数和(自身を除く): 17991884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 169733, 339466, 678932, 848665, 1357864, 1697330, 2715728, 3394660, 6789320, 13578640]

約数ペア:

[(1, 13578640), (2, 6789320), (4, 3394660), (5, 2715728), (8, 1697330), (10, 1357864), (16, 848665), (20, 678932), (40, 339466), (80, 169733)]