21890826

素因数分解:

$2^1\times 3^2\times {\mathrm{61}}^1\times {\mathrm{19937}}^1$

素因数の和:20006

約数の個数: 24

約数和(自身を含む): 48210084

約数和(自身を除く): 26319258

約数列:

[1, 2, 3, 6, 9, 18, 61, 122, 183, 366, 549, 1098, 19937, 39874, 59811, 119622, 179433, 358866, 1216157, 2432314, 3648471, 7296942, 10945413, 21890826]

約数ペア:

[(1, 21890826), (2, 10945413), (3, 7296942), (6, 3648471), (9, 2432314), (18, 1216157), (61, 358866), (122, 179433), (183, 119622), (366, 59811), (549, 39874), (1098, 19937)]