20161786869

素因数分解:

$3^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{670919}}^1$

素因数の和:670991

約数の個数: 40

約数和(自身を含む): 35070330240

約数和(自身を除く): 14908543371

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 81, 159, 189, 371, 477, 567, 1113, 1431, 3339, 4293, 10017, 30051, 670919, 2012757, 4696433, 6038271, 14089299, 18114813, 35558707, 42267897, 54344439, 106676121, 126803691, 248910949, 320028363, 380411073, 746732847, 960085089, 2240198541, 2880255267, 6720595623, 20161786869]

約数ペア:

[(1, 20161786869), (3, 6720595623), (7, 2880255267), (9, 2240198541), (21, 960085089), (27, 746732847), (53, 380411073), (63, 320028363), (81, 248910949), (159, 126803691), (189, 106676121), (371, 54344439), (477, 42267897), (567, 35558707), (1113, 18114813), (1431, 14089299), (3339, 6038271), (4293, 4696433), (10017, 2012757), (30051, 670919)]