19905745

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{1283}}^1$

素因数の和:1424

約数の個数: 16

約数和(自身を含む): 24960960

約数和(自身を除く): 5055215

約数列:

[1, 5, 29, 107, 145, 535, 1283, 3103, 6415, 15515, 37207, 137281, 186035, 686405, 3981149, 19905745]

約数ペア:

[(1, 19905745), (5, 3981149), (29, 686405), (107, 186035), (145, 137281), (535, 37207), (1283, 15515), (3103, 6415)]