20215392687

素因数分解:

$3^2\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1342591}}^1$

素因数の和:1342843

約数の個数: 24

約数和(自身を含む): 33511096320

約数和(自身を除く): 13295703633

約数列:

[1, 3, 7, 9, 21, 63, 239, 717, 1673, 2151, 5019, 15057, 1342591, 4027773, 9398137, 12083319, 28194411, 84583233, 320879249, 962637747, 2246154743, 2887913241, 6738464229, 20215392687]

約数ペア:

[(1, 20215392687), (3, 6738464229), (7, 2887913241), (9, 2246154743), (21, 962637747), (63, 320879249), (239, 84583233), (717, 28194411), (1673, 12083319), (2151, 9398137), (5019, 4027773), (15057, 1342591)]