21185666

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1\times {\mathrm{823}}^1$

素因数の和:1097

約数の個数: 16

約数和(自身を含む): 32491968

約数和(自身を除く): 11306302

約数列:

[1, 2, 61, 122, 211, 422, 823, 1646, 12871, 25742, 50203, 100406, 173653, 347306, 10592833, 21185666]

約数ペア:

[(1, 21185666), (2, 10592833), (61, 347306), (122, 173653), (211, 100406), (422, 50203), (823, 25742), (1646, 12871)]