20725684

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{15749}}^1$

素因数の和:15807

約数の個数: 24

約数和(自身を含む): 42336000

約数和(自身を除く): 21610316

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 15749, 31498, 62996, 110243, 220486, 440972, 740203, 1480406, 2960812, 5181421, 10362842, 20725684]

約数ペア:

[(1, 20725684), (2, 10362842), (4, 5181421), (7, 2960812), (14, 1480406), (28, 740203), (47, 440972), (94, 220486), (188, 110243), (329, 62996), (658, 31498), (1316, 15749)]