81172611

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{491}}^1$

素因数の和:673

約数の個数: 40

約数和(自身を含む): 131684784

約数和(自身を除く): 50512173

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 157, 351, 471, 491, 1053, 1413, 1473, 2041, 4239, 4419, 6123, 6383, 12717, 13257, 18369, 19149, 39771, 55107, 57447, 77087, 165321, 172341, 231261, 517023, 693783, 1002131, 2081349, 3006393, 6244047, 9019179, 27057537, 81172611]

約数ペア:

[(1, 81172611), (3, 27057537), (9, 9019179), (13, 6244047), (27, 3006393), (39, 2081349), (81, 1002131), (117, 693783), (157, 517023), (351, 231261), (471, 172341), (491, 165321), (1053, 77087), (1413, 57447), (1473, 55107), (2041, 39771), (4239, 19149), (4419, 18369), (6123, 13257), (6383, 12717)]