21396178

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1\times {\mathrm{839}}^1$

素因数の和:1193

約数の個数: 16

約数和(自身を含む): 33022080

約数和(自身を除く): 11625902

約数列:

[1, 2, 41, 82, 311, 622, 839, 1678, 12751, 25502, 34399, 68798, 260929, 521858, 10698089, 21396178]

約数ペア:

[(1, 21396178), (2, 10698089), (41, 521858), (82, 260929), (311, 68798), (622, 34399), (839, 25502), (1678, 12751)]