20397411

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2521}}^1$

素因数の和:2587

約数の個数: 24

約数和(自身を含む): 31474560

約数和(自身を除く): 11077149

約数列:

[1, 3, 9, 29, 31, 87, 93, 261, 279, 899, 2521, 2697, 7563, 8091, 22689, 73109, 78151, 219327, 234453, 657981, 703359, 2266379, 6799137, 20397411]

約数ペア:

[(1, 20397411), (3, 6799137), (9, 2266379), (29, 703359), (31, 657981), (87, 234453), (93, 219327), (261, 78151), (279, 73109), (899, 22689), (2521, 8091), (2697, 7563)]