220779

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1$

素因数の和:76

約数の個数: 32

約数和(自身を含む): 383040

約数和(自身を除く): 162261

約数列:

[1, 3, 9, 13, 17, 27, 37, 39, 51, 111, 117, 153, 221, 333, 351, 459, 481, 629, 663, 999, 1443, 1887, 1989, 4329, 5661, 5967, 8177, 12987, 16983, 24531, 73593, 220779]

約数ペア:

[(1, 220779), (3, 73593), (9, 24531), (13, 16983), (17, 12987), (27, 8177), (37, 5967), (39, 5661), (51, 4329), (111, 1989), (117, 1887), (153, 1443), (221, 999), (333, 663), (351, 629), (459, 481)]