20817195

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{198259}}^1$

素因数の和:198274

約数の個数: 16

約数和(自身を含む): 38065920

約数和(自身を除く): 17248725

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 198259, 594777, 991295, 1387813, 2973885, 4163439, 6939065, 20817195]

約数ペア:

[(1, 20817195), (3, 6939065), (5, 4163439), (7, 2973885), (15, 1387813), (21, 991295), (35, 594777), (105, 198259)]