21488434

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13757}}^1$

素因数の和:13841

約数の個数: 16

約数和(自身を含む): 35660736

約数和(自身を除く): 14172302

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 13757, 27514, 151327, 302654, 976747, 1953494, 10744217, 21488434]

約数ペア:

[(1, 21488434), (2, 10744217), (11, 1953494), (22, 976747), (71, 302654), (142, 151327), (781, 27514), (1562, 13757)]