19976516

素因数分解:

$2^2\times 7^2\times {\mathrm{101921}}^1$

素因数の和:101939

約数の個数: 18

約数和(自身を含む): 40666878

約数和(自身を除く): 20690362

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 101921, 203842, 407684, 713447, 1426894, 2853788, 4994129, 9988258, 19976516]

約数ペア:

[(1, 19976516), (2, 9988258), (4, 4994129), (7, 2853788), (14, 1426894), (28, 713447), (49, 407684), (98, 203842), (196, 101921)]