21148197

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53003}}^1$

素因数の和:53032

約数の個数: 16

約数和(自身を含む): 33922560

約数和(自身を除く): 12774363

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53003, 159009, 371021, 1007057, 1113063, 3021171, 7049399, 21148197]

約数ペア:

[(1, 21148197), (3, 7049399), (7, 3021171), (19, 1113063), (21, 1007057), (57, 371021), (133, 159009), (399, 53003)]