19837895

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{433}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 32060448

約数和(自身を除く): 12222553

約数列:

[1, 5, 7, 11, 17, 35, 49, 55, 77, 85, 119, 187, 245, 385, 433, 539, 595, 833, 935, 1309, 2165, 2695, 3031, 4165, 4763, 6545, 7361, 9163, 15155, 21217, 23815, 33341, 36805, 45815, 51527, 80971, 106085, 166705, 233387, 257635, 360689, 404855, 566797, 1166935, 1803445, 2833985, 3967579, 19837895]

約数ペア:

[(1, 19837895), (5, 3967579), (7, 2833985), (11, 1803445), (17, 1166935), (35, 566797), (49, 404855), (55, 360689), (77, 257635), (85, 233387), (119, 166705), (187, 106085), (245, 80971), (385, 51527), (433, 45815), (539, 36805), (595, 33341), (833, 23815), (935, 21217), (1309, 15155), (2165, 9163), (2695, 7361), (3031, 6545), (4165, 4763)]