81591419

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{5569}}^1$

素因数の和:5619

約数の個数: 24

約数和(自身を含む): 106676640

約数和(自身を除く): 25085221

約数列:

[1, 7, 13, 23, 49, 91, 161, 299, 637, 1127, 2093, 5569, 14651, 38983, 72397, 128087, 272881, 506779, 896609, 1665131, 3547453, 6276263, 11655917, 81591419]

約数ペア:

[(1, 81591419), (7, 11655917), (13, 6276263), (23, 3547453), (49, 1665131), (91, 896609), (161, 506779), (299, 272881), (637, 128087), (1127, 72397), (2093, 38983), (5569, 14651)]