21997646

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{14083}}^1$

素因数の和:14167

約数の個数: 16

約数和(自身を含む): 36505728

約数和(自身を除く): 14508082

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 14083, 28166, 154913, 309826, 999893, 1999786, 10998823, 21997646]

約数ペア:

[(1, 21997646), (2, 10998823), (11, 1999786), (22, 999893), (71, 309826), (142, 154913), (781, 28166), (1562, 14083)]