19805554

素因数分解:

$2^1\times {\mathrm{139}}^1\times {\mathrm{191}}^1\times {\mathrm{373}}^1$

素因数の和:705

約数の個数: 16

約数和(自身を含む): 30159360

約数和(自身を除く): 10353806

約数列:

[1, 2, 139, 191, 278, 373, 382, 746, 26549, 51847, 53098, 71243, 103694, 142486, 9902777, 19805554]

約数ペア:

[(1, 19805554), (2, 9902777), (139, 142486), (191, 103694), (278, 71243), (373, 53098), (382, 51847), (746, 26549)]