20644390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{158803}}^1$

素因数の和:158823

約数の個数: 16

約数和(自身を含む): 40018608

約数和(自身を除く): 19374218

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 158803, 317606, 794015, 1588030, 2064439, 4128878, 10322195, 20644390]

約数ペア:

[(1, 20644390), (2, 10322195), (5, 4128878), (10, 2064439), (13, 1588030), (26, 794015), (65, 317606), (130, 158803)]