19505853

素因数分解:

$3^9\times {\mathrm{991}}^1$

素因数の和:1018

約数の個数: 20

約数和(自身を含む): 29287808

約数和(自身を除く): 9781955

約数列:

[1, 3, 9, 27, 81, 243, 729, 991, 2187, 2973, 6561, 8919, 19683, 26757, 80271, 240813, 722439, 2167317, 6501951, 19505853]

約数ペア:

[(1, 19505853), (3, 6501951), (9, 2167317), (27, 722439), (81, 240813), (243, 80271), (729, 26757), (991, 19683), (2187, 8919), (2973, 6561)]