20947173

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{3557}}^1$

素因数の和:3724

約数の個数: 16

約数和(自身を含む): 30285696

約数和(自身を除く): 9338523

約数列:

[1, 3, 13, 39, 151, 453, 1963, 3557, 5889, 10671, 46241, 138723, 537107, 1611321, 6982391, 20947173]

約数ペア:

[(1, 20947173), (3, 6982391), (13, 1611321), (39, 537107), (151, 138723), (453, 46241), (1963, 10671), (3557, 5889)]