81306828

素因数分解:

$2^2\times 3^6\times {\mathrm{27883}}^1$

素因数の和:27905

約数の個数: 42

約数和(自身を含む): 213340484

約数和(自身を除く): 132033656

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 729, 972, 1458, 2916, 27883, 55766, 83649, 111532, 167298, 250947, 334596, 501894, 752841, 1003788, 1505682, 2258523, 3011364, 4517046, 6775569, 9034092, 13551138, 20326707, 27102276, 40653414, 81306828]

約数ペア:

[(1, 81306828), (2, 40653414), (3, 27102276), (4, 20326707), (6, 13551138), (9, 9034092), (12, 6775569), (18, 4517046), (27, 3011364), (36, 2258523), (54, 1505682), (81, 1003788), (108, 752841), (162, 501894), (243, 334596), (324, 250947), (486, 167298), (729, 111532), (972, 83649), (1458, 55766), (2916, 27883)]