20438541

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:586

約数の個数: 32

約数和(自身を含む): 31920000

約数和(自身を除く): 11481459

約数列:

[1, 3, 9, 27, 37, 41, 111, 123, 333, 369, 499, 999, 1107, 1497, 1517, 4491, 4551, 13473, 13653, 18463, 20459, 40959, 55389, 61377, 166167, 184131, 498501, 552393, 756983, 2270949, 6812847, 20438541]

約数ペア:

[(1, 20438541), (3, 6812847), (9, 2270949), (27, 756983), (37, 552393), (41, 498501), (111, 184131), (123, 166167), (333, 61377), (369, 55389), (499, 40959), (999, 20459), (1107, 18463), (1497, 13653), (1517, 13473), (4491, 4551)]