18534901

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{277}}^1$

素因数の和:385

約数の個数: 24

約数和(自身を含む): 23663360

約数和(自身を除く): 5128459

約数列:

[1, 7, 11, 77, 79, 121, 277, 553, 847, 869, 1939, 3047, 6083, 9559, 21329, 21883, 33517, 66913, 153181, 234619, 240713, 1684991, 2647843, 18534901]

約数ペア:

[(1, 18534901), (7, 2647843), (11, 1684991), (77, 240713), (79, 234619), (121, 153181), (277, 66913), (553, 33517), (847, 21883), (869, 21329), (1939, 9559), (3047, 6083)]