21191654

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13567}}^1$

素因数の和:13651

約数の個数: 16

約数和(自身を含む): 35168256

約数和(自身を除く): 13976602

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 13567, 27134, 149237, 298474, 963257, 1926514, 10595827, 21191654]

約数ペア:

[(1, 21191654), (2, 10595827), (11, 1926514), (22, 963257), (71, 298474), (142, 149237), (781, 27134), (1562, 13567)]