19938879

素因数分解:

$3^9\times {\mathrm{1013}}^1$

素因数の和:1040

約数の個数: 20

約数和(自身を含む): 29937336

約数和(自身を除く): 9998457

約数列:

[1, 3, 9, 27, 81, 243, 729, 1013, 2187, 3039, 6561, 9117, 19683, 27351, 82053, 246159, 738477, 2215431, 6646293, 19938879]

約数ペア:

[(1, 19938879), (3, 6646293), (9, 2215431), (27, 738477), (81, 246159), (243, 82053), (729, 27351), (1013, 19683), (2187, 9117), (3039, 6561)]