20831178

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1\times {\mathrm{307}}^1$

素因数の和:618

約数の個数: 32

約数和(自身を含む): 42932736

約数和(自身を除く): 22101558

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 263, 307, 526, 614, 789, 921, 1578, 1842, 11309, 13201, 22618, 26402, 33927, 39603, 67854, 79206, 80741, 161482, 242223, 484446, 3471863, 6943726, 10415589, 20831178]

約数ペア:

[(1, 20831178), (2, 10415589), (3, 6943726), (6, 3471863), (43, 484446), (86, 242223), (129, 161482), (258, 80741), (263, 79206), (307, 67854), (526, 39603), (614, 33927), (789, 26402), (921, 22618), (1578, 13201), (1842, 11309)]