31931185

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:154

約数の個数: 64

約数和(自身を含む): 49641984

約数和(自身を除く): 17710799

約数列:

[1, 5, 11, 13, 17, 37, 55, 65, 71, 85, 143, 185, 187, 221, 355, 407, 481, 629, 715, 781, 923, 935, 1105, 1207, 2035, 2405, 2431, 2627, 3145, 3905, 4615, 5291, 6035, 6919, 8177, 10153, 12155, 13135, 13277, 15691, 26455, 28897, 34151, 34595, 40885, 44659, 50765, 66385, 78455, 89947, 144485, 170755, 172601, 223295, 375661, 449735, 491249, 580567, 863005, 1878305, 2456245, 2902835, 6386237, 31931185]

約数ペア:

[(1, 31931185), (5, 6386237), (11, 2902835), (13, 2456245), (17, 1878305), (37, 863005), (55, 580567), (65, 491249), (71, 449735), (85, 375661), (143, 223295), (185, 172601), (187, 170755), (221, 144485), (355, 89947), (407, 78455), (481, 66385), (629, 50765), (715, 44659), (781, 40885), (923, 34595), (935, 34151), (1105, 28897), (1207, 26455), (2035, 15691), (2405, 13277), (2431, 13135), (2627, 12155), (3145, 10153), (3905, 8177), (4615, 6919), (5291, 6035)]