28478890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1301}}^1$

素因数の和:1518

約数の個数: 32

約数和(自身を含む): 56246400

約数和(自身を除く): 27767510

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 199, 398, 995, 1301, 1990, 2189, 2602, 4378, 6505, 10945, 13010, 14311, 21890, 28622, 71555, 143110, 258899, 517798, 1294495, 2588990, 2847889, 5695778, 14239445, 28478890]

約数ペア:

[(1, 28478890), (2, 14239445), (5, 5695778), (10, 2847889), (11, 2588990), (22, 1294495), (55, 517798), (110, 258899), (199, 143110), (398, 71555), (995, 28622), (1301, 21890), (1990, 14311), (2189, 13010), (2602, 10945), (4378, 6505)]