21744989

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{359}}^1\times {\mathrm{509}}^1$

素因数の和:892

約数の個数: 16

約数和(自身を含む): 26438400

約数和(自身を除く): 4693411

約数列:

[1, 7, 17, 119, 359, 509, 2513, 3563, 6103, 8653, 42721, 60571, 182731, 1279117, 3106427, 21744989]

約数ペア:

[(1, 21744989), (7, 3106427), (17, 1279117), (119, 182731), (359, 60571), (509, 42721), (2513, 8653), (3563, 6103)]