20119176040

素因数分解:

$2^3\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{390209}}^1$

素因数の和:391509

約数の個数: 32

約数和(自身を含む): 45303381000

約数和(自身を除く): 25184204960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1289, 2578, 5156, 6445, 10312, 12890, 25780, 51560, 390209, 780418, 1560836, 1951045, 3121672, 3902090, 7804180, 15608360, 502979401, 1005958802, 2011917604, 2514897005, 4023835208, 5029794010, 10059588020, 20119176040]

約数ペア:

[(1, 20119176040), (2, 10059588020), (4, 5029794010), (5, 4023835208), (8, 2514897005), (10, 2011917604), (20, 1005958802), (40, 502979401), (1289, 15608360), (2578, 7804180), (5156, 3902090), (6445, 3121672), (10312, 1951045), (12890, 1560836), (25780, 780418), (51560, 390209)]