21775203

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:424

約数の個数: 32

約数和(自身を含む): 33707520

約数和(自身を除く): 11932317

約数列:

[1, 3, 9, 27, 37, 71, 111, 213, 307, 333, 639, 921, 999, 1917, 2627, 2763, 7881, 8289, 11359, 21797, 23643, 34077, 65391, 70929, 102231, 196173, 306693, 588519, 806489, 2419467, 7258401, 21775203]

約数ペア:

[(1, 21775203), (3, 7258401), (9, 2419467), (27, 806489), (37, 588519), (71, 306693), (111, 196173), (213, 102231), (307, 70929), (333, 65391), (639, 34077), (921, 23643), (999, 21797), (1917, 11359), (2627, 8289), (2763, 7881)]