19665639

素因数分解:

$3^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1553}}^1$

素因数の和:1636

約数の個数: 32

約数和(自身を含む): 33815040

約数和(自身を除く): 14149401

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 189, 201, 469, 603, 1407, 1553, 1809, 4221, 4659, 10871, 12663, 13977, 32613, 41931, 97839, 104051, 293517, 312153, 728357, 936459, 2185071, 2809377, 6555213, 19665639]

約数ペア:

[(1, 19665639), (3, 6555213), (7, 2809377), (9, 2185071), (21, 936459), (27, 728357), (63, 312153), (67, 293517), (189, 104051), (201, 97839), (469, 41931), (603, 32613), (1407, 13977), (1553, 12663), (1809, 10871), (4221, 4659)]