20920851

素因数分解:

$3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{4549}}^1$

素因数の和:4635

約数の個数: 24

約数和(自身を含む): 35016800

約数和(自身を除く): 14095949

約数列:

[1, 3, 7, 9, 21, 63, 73, 219, 511, 657, 1533, 4549, 4599, 13647, 31843, 40941, 95529, 286587, 332077, 996231, 2324539, 2988693, 6973617, 20920851]

約数ペア:

[(1, 20920851), (3, 6973617), (7, 2988693), (9, 2324539), (21, 996231), (63, 332077), (73, 286587), (219, 95529), (511, 40941), (657, 31843), (1533, 13647), (4549, 4599)]