61616961

素因数分解:

$3^2\times 7^2\times {\mathrm{139721}}^1$

素因数の和:139741

約数の個数: 18

約数和(自身を含む): 103534002

約数和(自身を除く): 41917041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 139721, 419163, 978047, 1257489, 2934141, 6846329, 8802423, 20538987, 61616961]

約数ペア:

[(1, 61616961), (3, 20538987), (7, 8802423), (9, 6846329), (21, 2934141), (49, 1257489), (63, 978047), (147, 419163), (441, 139721)]