19702305

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{20849}}^1$

素因数の和:20870

約数の個数: 32

約数和(自身を含む): 40032000

約数和(自身を除く): 20329695

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 20849, 62547, 104245, 145943, 187641, 312735, 437829, 562923, 729715, 938205, 1313487, 2189145, 2814615, 3940461, 6567435, 19702305]

約数ペア:

[(1, 19702305), (3, 6567435), (5, 3940461), (7, 2814615), (9, 2189145), (15, 1313487), (21, 938205), (27, 729715), (35, 562923), (45, 437829), (63, 312735), (105, 187641), (135, 145943), (189, 104245), (315, 62547), (945, 20849)]