31888017

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{7129}}^1$

素因数の和:7213

約数の個数: 24

約数和(自身を含む): 53389440

約数和(自身を除く): 21501423

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 7129, 21387, 49903, 64161, 149709, 449127, 506159, 1518477, 3543113, 4555431, 10629339, 31888017]

約数ペア:

[(1, 31888017), (3, 10629339), (7, 4555431), (9, 3543113), (21, 1518477), (63, 506159), (71, 449127), (213, 149709), (497, 64161), (639, 49903), (1491, 21387), (4473, 7129)]