19402565

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{42643}}^1$

素因数の和:42668

約数の個数: 16

約数和(自身を含む): 28656768

約数和(自身を除く): 9254203

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 42643, 213215, 298501, 554359, 1492505, 2771795, 3880513, 19402565]

約数ペア:

[(1, 19402565), (5, 3880513), (7, 2771795), (13, 1492505), (35, 554359), (65, 298501), (91, 213215), (455, 42643)]