20879708

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{1069}}^1$

素因数の和:1349

約数の個数: 24

約数和(自身を含む): 38648400

約数和(自身を除く): 17768692

約数列:

[1, 2, 4, 19, 38, 76, 257, 514, 1028, 1069, 2138, 4276, 4883, 9766, 19532, 20311, 40622, 81244, 274733, 549466, 1098932, 5219927, 10439854, 20879708]

約数ペア:

[(1, 20879708), (2, 10439854), (4, 5219927), (19, 1098932), (38, 549466), (76, 274733), (257, 81244), (514, 40622), (1028, 20311), (1069, 19532), (2138, 9766), (4276, 4883)]