20640878

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{3001}}^1$

素因数の和:3203

約数の個数: 16

約数和(自身を含む): 32781840

約数和(自身を除く): 12140962

約数列:

[1, 2, 19, 38, 181, 362, 3001, 3439, 6002, 6878, 57019, 114038, 543181, 1086362, 10320439, 20640878]

約数ペア:

[(1, 20640878), (2, 10320439), (19, 1086362), (38, 543181), (181, 114038), (362, 57019), (3001, 6878), (3439, 6002)]