20694015

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:229

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 19119105

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 71, 85, 127, 135, 153, 213, 255, 355, 381, 459, 635, 639, 765, 1065, 1143, 1207, 1905, 1917, 2159, 2295, 3195, 3429, 3621, 5715, 6035, 6477, 9017, 9585, 10795, 10863, 17145, 18105, 19431, 27051, 32385, 32589, 45085, 54315, 58293, 81153, 97155, 135255, 153289, 162945, 243459, 291465, 405765, 459867, 766445, 1217295, 1379601, 2299335, 4138803, 6898005, 20694015]

約数ペア:

[(1, 20694015), (3, 6898005), (5, 4138803), (9, 2299335), (15, 1379601), (17, 1217295), (27, 766445), (45, 459867), (51, 405765), (71, 291465), (85, 243459), (127, 162945), (135, 153289), (153, 135255), (213, 97155), (255, 81153), (355, 58293), (381, 54315), (459, 45085), (635, 32589), (639, 32385), (765, 27051), (1065, 19431), (1143, 18105), (1207, 17145), (1905, 10863), (1917, 10795), (2159, 9585), (2295, 9017), (3195, 6477), (3429, 6035), (3621, 5715)]