399793989

素因数分解:

$3^1\times 7^2\times {\mathrm{227}}^1\times {\mathrm{11981}}^1$

素因数の和:12225

約数の個数: 24

約数和(自身を含む): 622872288

約数和(自身を除く): 223078299

約数列:

[1, 3, 7, 21, 49, 147, 227, 681, 1589, 4767, 11123, 11981, 33369, 35943, 83867, 251601, 587069, 1761207, 2719687, 8159061, 19037809, 57113427, 133264663, 399793989]

約数ペア:

[(1, 399793989), (3, 133264663), (7, 57113427), (21, 19037809), (49, 8159061), (147, 2719687), (227, 1761207), (681, 587069), (1589, 251601), (4767, 83867), (11123, 35943), (11981, 33369)]