81939417

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{17981}}^1$

素因数の和:18029

約数の個数: 24

約数和(自身を含む): 131196672

約数和(自身を除く): 49257255

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4557, 17981, 53943, 125867, 377601, 557411, 881069, 1672233, 2643207, 3901877, 11705631, 27313139, 81939417]

約数ペア:

[(1, 81939417), (3, 27313139), (7, 11705631), (21, 3901877), (31, 2643207), (49, 1672233), (93, 881069), (147, 557411), (217, 377601), (651, 125867), (1519, 53943), (4557, 17981)]