209961129

素因数分解:

$3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{20117}}^1$

素因数の和:20205

約数の個数: 24

約数和(自身を含む): 330257088

約数和(自身を除く): 120295959

約数列:

[1, 3, 7, 21, 49, 71, 147, 213, 497, 1491, 3479, 10437, 20117, 60351, 140819, 422457, 985733, 1428307, 2957199, 4284921, 9998149, 29994447, 69987043, 209961129]

約数ペア:

[(1, 209961129), (3, 69987043), (7, 29994447), (21, 9998149), (49, 4284921), (71, 2957199), (147, 1428307), (213, 985733), (497, 422457), (1491, 140819), (3479, 60351), (10437, 20117)]