20031788

素因数分解:

$2^2\times 7^2\times {\mathrm{102203}}^1$

素因数の和:102221

約数の個数: 18

約数和(自身を含む): 40779396

約数和(自身を除く): 20747608

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 102203, 204406, 408812, 715421, 1430842, 2861684, 5007947, 10015894, 20031788]

約数ペア:

[(1, 20031788), (2, 10015894), (4, 5007947), (7, 2861684), (14, 1430842), (28, 715421), (49, 408812), (98, 204406), (196, 102203)]