21897921

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{3089}}^1$

素因数の和:3248

約数の個数: 16

約数和(自身を含む): 31147200

約数和(自身を除く): 9249279

約数列:

[1, 3, 17, 51, 139, 417, 2363, 3089, 7089, 9267, 52513, 157539, 429371, 1288113, 7299307, 21897921]

約数ペア:

[(1, 21897921), (3, 7299307), (17, 1288113), (51, 429371), (139, 157539), (417, 52513), (2363, 9267), (3089, 7089)]