28013425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 40854528

約数和(自身を除く): 12841103

約数列:

[1, 5, 11, 23, 25, 43, 55, 103, 115, 215, 253, 275, 473, 515, 575, 989, 1075, 1133, 1265, 2365, 2369, 2575, 4429, 4945, 5665, 6325, 10879, 11825, 11845, 22145, 24725, 26059, 28325, 48719, 54395, 59225, 101867, 110725, 130295, 243595, 271975, 509335, 651475, 1120537, 1217975, 2546675, 5602685, 28013425]

約数ペア:

[(1, 28013425), (5, 5602685), (11, 2546675), (23, 1217975), (25, 1120537), (43, 651475), (55, 509335), (103, 271975), (115, 243595), (215, 130295), (253, 110725), (275, 101867), (473, 59225), (515, 54395), (575, 48719), (989, 28325), (1075, 26059), (1133, 24725), (1265, 22145), (2365, 11845), (2369, 11825), (2575, 10879), (4429, 6325), (4945, 5665)]