20389131

素因数分解:

$3^3\times 7^1\times {\mathrm{233}}^1\times {\mathrm{463}}^1$

素因数の和:712

約数の個数: 32

約数和(自身を含む): 34744320

約数和(自身を除く): 14355189

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 233, 463, 699, 1389, 1631, 2097, 3241, 4167, 4893, 6291, 9723, 12501, 14679, 29169, 44037, 87507, 107879, 323637, 755153, 970911, 2265459, 2912733, 6796377, 20389131]

約数ペア:

[(1, 20389131), (3, 6796377), (7, 2912733), (9, 2265459), (21, 970911), (27, 755153), (63, 323637), (189, 107879), (233, 87507), (463, 44037), (699, 29169), (1389, 14679), (1631, 12501), (2097, 9723), (3241, 6291), (4167, 4893)]