20647899

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1$

素因数の和:416

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 11285541

約数列:

[1, 3, 9, 27, 47, 53, 141, 159, 307, 423, 477, 921, 1269, 1431, 2491, 2763, 7473, 8289, 14429, 16271, 22419, 43287, 48813, 67257, 129861, 146439, 389583, 439317, 764737, 2294211, 6882633, 20647899]

約数ペア:

[(1, 20647899), (3, 6882633), (9, 2294211), (27, 764737), (47, 439317), (53, 389583), (141, 146439), (159, 129861), (307, 67257), (423, 48813), (477, 43287), (921, 22419), (1269, 16271), (1431, 14429), (2491, 8289), (2763, 7473)]