28213225

素因数分解:

$5^2\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:369

約数の個数: 24

約数和(自身を含む): 36158400

約数和(自身を除く): 7945175

約数列:

[1, 5, 25, 53, 107, 199, 265, 535, 995, 1325, 2675, 4975, 5671, 10547, 21293, 28355, 52735, 106465, 141775, 263675, 532325, 1128529, 5642645, 28213225]

約数ペア:

[(1, 28213225), (5, 5642645), (25, 1128529), (53, 532325), (107, 263675), (199, 141775), (265, 106465), (535, 52735), (995, 28355), (1325, 21293), (2675, 10547), (4975, 5671)]