81438539

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{739}}^1$

素因数の和:939

約数の個数: 24

約数和(自身を含む): 102750480

約数和(自身を除く): 21311941

約数列:

[1, 7, 13, 49, 91, 173, 637, 739, 1211, 2249, 5173, 8477, 9607, 15743, 36211, 67249, 110201, 127847, 470743, 894929, 1662011, 6264503, 11634077, 81438539]

約数ペア:

[(1, 81438539), (7, 11634077), (13, 6264503), (49, 1662011), (91, 894929), (173, 470743), (637, 127847), (739, 110201), (1211, 67249), (2249, 36211), (5173, 15743), (8477, 9607)]