20977892

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{569}}^1\times {\mathrm{709}}^1$

素因数の和:1295

約数の個数: 24

約数和(自身を含む): 39660600

約数和(自身を除く): 18682708

約数列:

[1, 2, 4, 13, 26, 52, 569, 709, 1138, 1418, 2276, 2836, 7397, 9217, 14794, 18434, 29588, 36868, 403421, 806842, 1613684, 5244473, 10488946, 20977892]

約数ペア:

[(1, 20977892), (2, 10488946), (4, 5244473), (13, 1613684), (26, 806842), (52, 403421), (569, 36868), (709, 29588), (1138, 18434), (1418, 14794), (2276, 9217), (2836, 7397)]