78904010

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1\times {\mathrm{379}}^1$

素因数の和:686

約数の個数: 32

約数和(自身を含む): 144460800

約数和(自身を除く): 65556790

約数列:

[1, 2, 5, 10, 109, 191, 218, 379, 382, 545, 758, 955, 1090, 1895, 1910, 3790, 20819, 41311, 41638, 72389, 82622, 104095, 144778, 206555, 208190, 361945, 413110, 723890, 7890401, 15780802, 39452005, 78904010]

約数ペア:

[(1, 78904010), (2, 39452005), (5, 15780802), (10, 7890401), (109, 723890), (191, 413110), (218, 361945), (379, 208190), (382, 206555), (545, 144778), (758, 104095), (955, 82622), (1090, 72389), (1895, 41638), (1910, 41311), (3790, 20819)]