18977240

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3463}}^1$

素因数の和:3611

約数の個数: 32

約数和(自身を含む): 43022880

約数和(自身を除く): 24045640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 3463, 5480, 6926, 13852, 17315, 27704, 34630, 69260, 138520, 474431, 948862, 1897724, 2372155, 3795448, 4744310, 9488620, 18977240]

約数ペア:

[(1, 18977240), (2, 9488620), (4, 4744310), (5, 3795448), (8, 2372155), (10, 1897724), (20, 948862), (40, 474431), (137, 138520), (274, 69260), (548, 34630), (685, 27704), (1096, 17315), (1370, 13852), (2740, 6926), (3463, 5480)]