31191507

素因数分解:

$3^3\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:440

約数の個数: 32

約数和(自身を含む): 47900160

約数和(自身を除く): 16708653

約数列:

[1, 3, 9, 27, 53, 71, 159, 213, 307, 477, 639, 921, 1431, 1917, 2763, 3763, 8289, 11289, 16271, 21797, 33867, 48813, 65391, 101601, 146439, 196173, 439317, 588519, 1155241, 3465723, 10397169, 31191507]

約数ペア:

[(1, 31191507), (3, 10397169), (9, 3465723), (27, 1155241), (53, 588519), (71, 439317), (159, 196173), (213, 146439), (307, 101601), (477, 65391), (639, 48813), (921, 33867), (1431, 21797), (1917, 16271), (2763, 11289), (3763, 8289)]