16720485

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{641}}^1$

素因数の和:733

約数の個数: 32

約数和(自身を含む): 28104192

約数和(自身を除く): 11383707

約数列:

[1, 3, 5, 15, 37, 47, 111, 141, 185, 235, 555, 641, 705, 1739, 1923, 3205, 5217, 8695, 9615, 23717, 26085, 30127, 71151, 90381, 118585, 150635, 355755, 451905, 1114699, 3344097, 5573495, 16720485]

約数ペア:

[(1, 16720485), (3, 5573495), (5, 3344097), (15, 1114699), (37, 451905), (47, 355755), (111, 150635), (141, 118585), (185, 90381), (235, 71151), (555, 30127), (641, 26085), (705, 23717), (1739, 9615), (1923, 8695), (3205, 5217)]