16815681

素因数分解:

$3^4\times {\mathrm{53}}^1\times {\mathrm{3917}}^1$

素因数の和:3982

約数の個数: 20

約数和(自身を含む): 25600212

約数和(自身を除く): 8784531

約数列:

[1, 3, 9, 27, 53, 81, 159, 477, 1431, 3917, 4293, 11751, 35253, 105759, 207601, 317277, 622803, 1868409, 5605227, 16815681]

約数ペア:

[(1, 16815681), (3, 5605227), (9, 1868409), (27, 622803), (53, 317277), (81, 207601), (159, 105759), (477, 35253), (1431, 11751), (3917, 4293)]