1215204039

素因数分解:

$3^4\times 7^1\times {\mathrm{2143217}}^1$

素因数の和:2143236

約数の個数: 20

約数和(自身を含む): 2074635024

約数和(自身を除く): 859430985

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 2143217, 6429651, 15002519, 19288953, 45007557, 57866859, 135022671, 173600577, 405068013, 1215204039]

約数ペア:

[(1, 1215204039), (3, 405068013), (7, 173600577), (9, 135022671), (21, 57866859), (27, 45007557), (63, 19288953), (81, 15002519), (189, 6429651), (567, 2143217)]