19865395

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{1439}}^1$

素因数の和:1706

約数の個数: 16

約数和(自身を含む): 26127360

約数和(自身を除く): 6261965

約数列:

[1, 5, 11, 55, 251, 1255, 1439, 2761, 7195, 13805, 15829, 79145, 361189, 1805945, 3973079, 19865395]

約数ペア:

[(1, 19865395), (5, 3973079), (11, 1805945), (55, 361189), (251, 79145), (1255, 15829), (1439, 13805), (2761, 7195)]