81709089

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{20807}}^1$

素因数の和:20845

約数の個数: 32

約数和(自身を含む): 143824896

約数和(自身を除く): 62115807

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 20807, 62421, 145649, 228877, 353719, 436947, 686631, 1061157, 1602139, 2476033, 3890909, 4806417, 7428099, 11672727, 27236363, 81709089]

約数ペア:

[(1, 81709089), (3, 27236363), (7, 11672727), (11, 7428099), (17, 4806417), (21, 3890909), (33, 2476033), (51, 1602139), (77, 1061157), (119, 686631), (187, 436947), (231, 353719), (357, 228877), (561, 145649), (1309, 62421), (3927, 20807)]