20572820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{54139}}^1$

素因数の和:54167

約数の個数: 24

約数和(自身を含む): 45477600

約数和(自身を除く): 24904780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 54139, 108278, 216556, 270695, 541390, 1028641, 1082780, 2057282, 4114564, 5143205, 10286410, 20572820]

約数ペア:

[(1, 20572820), (2, 10286410), (4, 5143205), (5, 4114564), (10, 2057282), (19, 1082780), (20, 1028641), (38, 541390), (76, 270695), (95, 216556), (190, 108278), (380, 54139)]