20506409

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{11579}}^1$

素因数の和:11620

約数の個数: 16

約数和(自身を含む): 26680320

約数和(自身を除く): 6173911

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 11579, 81053, 127369, 266317, 891583, 1864219, 2929487, 20506409]

約数ペア:

[(1, 20506409), (7, 2929487), (11, 1864219), (23, 891583), (77, 266317), (161, 127369), (253, 81053), (1771, 11579)]