20161896820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77545757}}^1$

素因数の和:77545779

約数の個数: 24

約数和(自身を含む): 45596905704

約数和(自身を除く): 25435008884

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77545757, 155091514, 310183028, 387728785, 775457570, 1008094841, 1550915140, 2016189682, 4032379364, 5040474205, 10080948410, 20161896820]

約数ペア:

[(1, 20161896820), (2, 10080948410), (4, 5040474205), (5, 4032379364), (10, 2016189682), (13, 1550915140), (20, 1008094841), (26, 775457570), (52, 387728785), (65, 310183028), (130, 155091514), (260, 77545757)]