20320760

素因数分解:

$2^3\times 5^1\times {\mathrm{508019}}^1$

素因数の和:508030

約数の個数: 16

約数和(自身を含む): 45721800

約数和(自身を除く): 25401040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 508019, 1016038, 2032076, 2540095, 4064152, 5080190, 10160380, 20320760]

約数ペア:

[(1, 20320760), (2, 10160380), (4, 5080190), (5, 4064152), (8, 2540095), (10, 2032076), (20, 1016038), (40, 508019)]