20998276

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{9391}}^1$

素因数の和:9451

約数の個数: 24

約数和(自身を含む): 40498304

約数和(自身を除く): 19500028

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 9391, 18782, 37564, 122083, 244166, 403813, 488332, 807626, 1615252, 5249569, 10499138, 20998276]

約数ペア:

[(1, 20998276), (2, 10499138), (4, 5249569), (13, 1615252), (26, 807626), (43, 488332), (52, 403813), (86, 244166), (172, 122083), (559, 37564), (1118, 18782), (2236, 9391)]